Question

state and prove angle sum property​

Answer 1

Answer:

angle sum property meant to

add all the angles of a triangle

Answer 2

Answer:

It is the sum of all the angles of the polygon.

To prove -

if the given figure is the triangle ,then angle sum property of this figure will be 180 degree as triangle has 3 angles and the sum of 3 angles is 180 .

Hopes it helps you!!