Final Cover - For Printing

TRIANGLE

1. Sum of the three angles in a triangle is 180^0

Cut a sheet of paper in the form a triangle. Mark the three angles as A, B, and C. Now

cut the triangle into three pieces and observe that the vertices marked A, B, and C can

be arranged in such a way that they form an angle of 180^0 , when put together. Hence

the sum of the three angles in a triangle is 180^0.

2. Equilateral Triangle

Fold a sheet of paper vertically into two halves so that a crease is formed passing

through the midpoints of two opposite sides. Now bring one lower corner of the

paper to touch the crease already formed, ensuring that at the other lower end the

Module 88 : Triangle

B A

C

A

B C

A + B + C = 180 o