Matching Pairs Properties of a triangle (D)Online version Find the pair of each column and join them. by Tatiana Cruz 1 Adding two sides of a triangle 2 A triangle is 3 Angles sum property of a triangle 4 A exterior angle is equal to opposite interior angles 5 The largest side is the result is greater than the third side the side opposite the largest angle Exerior angle property of a triangle The sum of the interior angles is 180° a polygon with 3 angles, 3 vertices, and 3 sides