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Here with the help of this presentation you can learn the perfect way of drawing angles with the help of compass.<br>http://www.selectmytutor.co.uk/subject-maths.html
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60° Angle 1. Draw a line segment AB with the help of scale. A B 2. Make an arc with the help of a compass at point A. p A B o 3. Put the compass on point o draw an arc and join the cut point and A. 60° p A B o
120° Angle 1. Draw a line segment AB with the help of scale. A B 2. Make an arc with the help of a compass at point A. p A B o 3. Put the compass on point o and draw an arc. p A B o
4. Put the compass on the first cut and draw another arc and join the cut point and point A. C AB= 120° c 120° p o A B
180°(Straight) Angle 1. Draw a line segment AB with the help of scale. A B 2. Make an arc with the help of a compass at point A. p A B o 3. Put the compass on point o and draw an arc. p A B o
4. Put the compass on the first cut and draw another arc and then from point c draw one more arc . c p o A B
4. Join QA. QAB= 180° c 180° Q p o A B
90°(Right) Angle 1. Draw a line segment AB with the help of scale. A B 2. Make an arc with the help of a compass at point A. p A B o 3. Put the compass on point o and draw an arc. p A B o
4. Put the compass on the point m and c respectively and cut the arcs from both the points. T c m o A B
TAB= 90° 4. Join TA. T c m 90° o A B
30° Angle 1. Draw a line segment AB with the help of scale. A B 2. Make an arc with the help of a compass at point A. p A B o 3. Put the compass on point o draw an arc. p A B o
Put the compass on point o and n respectively draw arcs from both the sides. And join the he generated point to A. MAB = 30° n M 30° p o A B
45° Angle 1 Draw the angle of 90° as learned before. Draw arcs from point n and o respectively and join the cut point to A. T c m n P 45° o A B It is very simple to draw the angle of 45°. We just bisect the angle of 90°.
We have learnt all the major angles and how to draw remaining ones. TIPS for the remaining ones are here. For 75°, cut an arc from 60° and another one from 90°. You will get the desired angle. For 105°, cut the arcs from 90° and 120°. For 150°, use 120° and 180° likewise For 115°,you need to choose 120° and 150°