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In this worksheet, we are going to draw the window for the labor assignment.

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So on this page, you will find this square, the rectangle.

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So this rectangle's size is, you can read it here, is an A4.

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okay so and in this case you have the midpoint here and at the bottom already marked okay so

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we are going to connect these two points with

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a slight line we don't need the whole of it okay so i'm just going to mark

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because we are going to need it later here a line and here below

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So, just there below, I'm going to mark here just a very soft line, okay?

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Because we are going to need later the midpoint.

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Good.

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Here below, we are going to mark 10 millimeters,

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because we need a parallel line to the bottom, to the side of the paper,

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at 10 millimeters so if you have an a4 imagine this is the side of the paper okay and if you

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have this rectangle you leave 10 millimeters up so we connect these two points at 10 millimeters

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that's it and we are going to leave 17 millimeters from the margin this is for a4 okay if you have

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an a4 plus you will need 23 okay so now we are going to mark here we are going to mark

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From the side of the paper, if you have an A4, you need 17, 1.7, ok, and on the other

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side you will need the same, 1.7, ok, great.

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this we will erase this later okay but from this mark at 10 millimeters we need another 13.5 okay

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Okay, so from this point up, you need 13.5.

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Okay, that is 13.5.

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And on the other side, we are going to do the same.

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So from the mark of 10, we need another 13.5.

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Okay, great. We are going to connect these two points, something like that, there. Okay, so this height is 13.5. Okay, good.

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So, anyway, the measurements you have on the aula virtual, on the assignment, on the aula virtual, you have all the measurements in case you forget one of them.

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Okay? Anyway, I'm going to mark here. You don't have to do it on your page, but this is going to be 17 or 23. If you have an A4+, that is the idea. And here you are going to leave 10. That is the idea. Okay? Great.

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So, in order to close the rectangle we need, we are going to mark again 17 here, and 17

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on the other side, 17 there.

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We are going to connect everything up, and we will close, we will close our rectangle,

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can see here that is 10 millimeters from above from the side from the lower side of the paper

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17 from both margins and 13.5 total height okay so this height is going to be 30 in 5 okay

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millimeters good so here we have the rectangle once we have that we are going

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to draw parallels inside this rectangle five millimeters from three of the sides

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not the top one but the other three okay so we are going to measure again five

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millimeters on the right side five here below five again here in the corner five

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again on the other corner the same 5 5 and in this corner 5 again and here we

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placed before the midpoint of the whole segment there that is the midpoint so we

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are going to need here on the middle okay we are going to need another five

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millimeters column so here I'm going to measure from the midpoint I'm going to

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zoom a little bit so I will place 2.5 and 2.5 to each side and there on top

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you place a midpoint, you can measure if you need, and we are going to place, measure 2.5, 2.5, there.

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Okay, so again, we have used the midpoints there on top, and at the bottom we connect

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and we'll place this midpoint and that midpoint.

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Okay, so I'm going to outline everything out,

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connecting five millimeters apart from the different sides.

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So you get parallel lines five millimeters apart from the previous rectangle.

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there this one and this one so that is the final appearance of the first part so we got the previous

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rectangle and inside five millimeters five millimeters up five millimeters in and here

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using the midpoints five millimeters centered that is really important okay great

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i have named these six points with letters so we understand each other explaining the

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procedure so right now we are going to draw the two first arches

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to do that you're going to use these centers so we are going to need a first so you place

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a compass on a and we are going to draw two arches passing through D and C so first couple

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of arches go from A to D and then we change to C okay they are parallel and

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they share the same sensor then we are going to switch to D I'm going to get a

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a little bit closer so I'm going to go to D place the compass on D and you draw

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the symmetric arc and from D you change the radius to a and do the same so you

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will get this first window okay you close the first couple of arches part of

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ones. So we have used A for these two arches passing through C and D, and D for these two

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arches passing through A and B. We are going to repeat the same procedure there in the

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other side, but in this case we are going to use C and F. So you place the compass on

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C first, so C to F, C to F, to F, draw the first arc, change the radius to E but don't

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change the center, the parallel one, that's it, now you change center to F and repeat,

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so F, C, till it crosses the previous one over there, and change the radius, not the

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center F D F D you have to be accurate here and draw the parallel one okay so we have

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twin arches like this okay great for the bigger arches you need a big compass with a small one you

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would you wouldn't be able to do this so you are going to cover from F to A okay

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so from F sorry from F to A and you draw this B card okay so sorry I made a

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mistake so I'm going to repeat F A F A to draw this arc with the same radius

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you change to a F and do the same a F same radius again like this so you have

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the bigger arc and you're going to change the radius to a e a e this compass doesn't work

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that well so so a e sorry again a e that's it a e and f b with the same radius f b you draw

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the parallel arc good so for these two parallel arches just for you to have it clear you use this

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center for these two passing through these two points and you use f for these two arches passing

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through a and b okay and for the last part we are going to place here the circles in order to do

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that you are going to place the midpoint of this segment of the segment b c the midpoint if you

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did it right here you have eight centimeters so you are going to place the midpoint that is four

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okay so but by my advice is that you measure everything up because maybe you have or you

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have here a little mistake you could also do the segment by sector that you should do by now

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that you should know by now sorry of the segment BC okay but this is again the midpoint

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okay four of eight and that distance with a compass you are going to take the distance

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we are going to name this point m for example you don't need to to name the or to write down

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the letters okay because you are going to erase it or them later so don't name

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it I'm naming them for you to understand so I'm taking the distance FM and this

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distance you transport carefully here so again FM you transport with the compass

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If you don't have a big compass, you could also use the ruler.

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You can measure this distance, that is 13.1 in my case, and I'm transporting up the same distance.

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Okay, this way you will get here the center of the future circles.

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So, to know the radius of the circles you want to draw, you are going to connect A with O.

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Okay, so A, O, and we are going to draw here a line that connects A, O, and these two points.

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These two points are going to be the tangency points.

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So if you take now the compass, you can draw one arc passing through tangent to the arches.

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first circle

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ok

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and second circle

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that is the

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other circle

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that's it, ok, center there

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passing through the two points

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and that's it