Question

state and prove angle sum property of a triangle​

Answer 1

Answer:

angel sum property of a triangle is 180 degree

Answer 2

Step-by-step explanation:

• we have to prove that <1+<2+<3= 180°
• proof:- <1+<2=<4( exterior angle property)
• <1+<2+<3=<4+<3 (adding both sides by 3)
• but 3 and 4 form linear pair so their sum is 180°

1. <1+<2+<3=180°

hence proved