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Subject: Math , asked on 7/3/15

# how do i construct a 80 degree angle with a compass...??

Any angle that is not divisible by 15,is to be drawn with a protractor.
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Hey guys, the method I will be telling isn't something which can be justified, at least by me. However, it yields desired results, so you can go ahead with it
you must be knowing how to construct a 60 o angle, so I won't be writing down steps for that.
problem arises when we have to construct 20 o angle, so here are the steps :
1. draw any line PQ. Mark a point O anywhere between P and Q on the line.
2. With O as centre, and any suitable radius, draw an arc intersecting PQ at A and B .
3. With B as centre, and he same radius, cut an arc C on previously drawn arc AB. This is the normal 60 o angle.
4. With B and C as centres, cut arcs intersecting at L. This is the bisected 60o ie 30 o
5. BUT DO NOT join L to O, instead join L to A. Angle LAQ is the required 20 o triangle.
6. So now you can construct  60o on it . HOPE IT HELPS :D
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no we cant as it is not divisible by 15 as for this we will have to add 25 to 60 degree angle or 10 to 75 degree angle or subtract 5 from 90 degree angle and these all are  not possible so it is impossible

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YES WE CAN MAKE 80 DEGREE FROM CAMPASS.
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draw a point O,and a straight line through it. Put the centre of compass on the point O, start from 0 degree and mark a small point on 80 degree and then join the point and the marked point.Then 80 degree will be constructed
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you cant. omly the multiples of 15 can be constructed in compass

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Since 80 degree is not divisible by 15 this angle cannot be drawn by compass and a ruler and we can only draw angles that are divisible by 15 so yeah..
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ONLY  MULTIPLES  OF  15  DEGREES  ARE  POSSIBLE  TO  MAKE  WITH  A  COMPASS

ELSE HAVE TO BE MADE BY A PROTRACTOR
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YES WE CAN DO IT

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A 80 degree angle can't be drawn by a compass. It can only be drawn by a protractor.
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but if i could make with a protactor i wouldnt hav asked this q

u mean my book has wrong information..............yeah ....hummm.

any more answers              anyways 10x  fr the ans..!!!!!!!!!!!

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it is not possible to construct angles which are not divisible by 7.5 degree using a compass. but you are free to use a protractor for that purpose:)

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Draw a point, and a long straight line through it. Put the centre of the compass over the point, with north on the compass (or zero degrees) on the line. Then draw a second line out from the point at 80 degrees on the compass. You'll then have a 80 degree angle between the lines.

It's usually a trick that teachers decide to do on their pupils. A compass is what you use to find north and a pair of compasses is used to draw circles.

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u can use the help of a protractor

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not possible
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u need to make it with a protractor
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same as above

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we can't construct 80 degree angle
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