Question

what is the sum of interior angle of triangle 7​

Answer 1

Answer:

Theorem 1: Angle sum property of triangle states that the sum of interior angles of a triangle is 180°. Proof: Consider a ∆ABC, as shown in the figure below. To prove the above property of triangles, draw a line \overleftrightarrow {PQ} parallel to the side BC of the given triangle.

Answer 2

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.