Question

plz answer correct with explanation​

Answer 1

Answer:

It is always said that a triangle angles add up to 180° in every cases let me prove with examples.

Step-by-step explanation:

• case 1:- Right angled triangle:- one side exactly at 90°

sum of all the angles =90°+45°+45°=180°

• case 2:- Acute angle triangle:- one side is more than 0° but less than 90°

sum of all the angles = 60°+60°+60°=180°

• case 3:- Obtuse angle triangle:- one side is more than 90° but less than 180°

sum of all the angles = 120°+30°+30°=180°

$hence \: proved$

$thanks \: hope \: it \: helps \: you.$