Example:
Draw an angle ABC, which is 55˚.
Step 1: Draw a line BC and mark B as the vertex.
Step 2: Place the centre of the protractor at the vertex B and adjust the base line to be aligned to BC.
Step 3: Find 55˚ on the outer scale of the protractor and mark that point as point A.
Step 4: Remove the protractor and draw a line from point B to point A
Step 5: Label and ABC
Example:
Draw an angle ABC = 250˚
To draw the reflex angle, 250˚, we first draw the angle obtained by subtracting 250˚ from 360˚ which is
360˚ – 250˚ = 110˚
Step 1: Draw the line BC
Step 2: Place the centre of the protractor at the vertex B and adjust the base line to be aligned to BC.
Step 3: Find the angle 110˚ on the protractor (inner) scale and mark that as point A.
Step 4: Remove the protractor and draw a line from point B to point A.
Step 5: Label the reflex angle ABC
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