Question

state and prove angle sum property of the triangle​

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. ... Thus, the sum of the interior angles of a triangle is 180°.

Answer 2

Answer:

Where is the triangle......

Explanation:

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

prove

Start with the following triangle with arbitrary values for the angles:

Angle sum theorem

Since angle a, angle b, and angle c make a straight line,

angle a + angle b + angle c = 180 degrees

Since alternate interior angles are equal, angle a = angle x and angle b = angle y

Therefore, angle x + angle y + angle c = 180 degrees ...