Construct a such that , and . Measure .
First we draw a rough sketch
The steps for construction are given below:
Step 1: Construct a
Draw a line segment .
Considering as a center and radius, draw an arc.
Considering as a center and radius, draw another arc.
Let be the point where the two arcs intersect. Join and label the sides.
Thus, obtained is the required triangle.
Step 2: Measuring
Place the horizontal line of protractor along AB and then reading angle from where the side AC passes.
On measuring , we see that