Question

Prove angle sum property of quatilaterals

Answer 1

take a quadrilateral and

draw 1 diagnol through which we get 2 triangles

angle sum property of a triangle is 180°

as we have 2 triangles the angle sum property of a quadrilateral is

180° + 180° = 360°

Answer 2

Answer:

Draw a diagonal of the quard you will get 2 triangles

By angle sum property of triangle

Angles of 1st triangle = 180⁰

Angle of 2nd triangle = 180⁰

Sum of the angles of 2 triangle = 360⁰