Q5. Construct an equilateral triangle, given its side and justify the construction.
The following steps to make an equilateral triangle:
Step 1: Draw a line segment AB = 4 cm.
Step 2: With A and B as centres, make two arcs in the line segment AB. Mark it as D and E respectively.
Step 3: Now, with D and E as centres, make the two arcs cutting the previous arcs respectively, and forming an angle of each.
Step 4: Extend the lines of A and B until they intersect each other at point C.
Hence, triangle constructed is ABC which is equilateral.
Since the angles constructed are of each, so the third angle will also be .