Question

to verify by the paper cutting and pasting that sum of angles of a triangle 180​

Answer 1

Answer:

The three cut-outs of the three angles A, B and C placed adjacent to each other at a point form a line forming a straight angle = 180°. It shows that sum of the three angles of a triangle is 180º. Therefore, ∠A + ∠B + ∠C = 180°.