Question

prove that the sum of the angel of a triangle is 180 degree. also find the angles of a triangle if they are in the ratio 3:7:8

Answer 1

take the ratio as 3x,7x,8, as the sum of the triangle is 180 ...therfore
3x+7x+8x=180
18x=180
x=180\18
x=10
therefore 3x=30
7x=70
8x=80..
hope it helped thank u .........mark brainlinest

Answer 2

Answer :-

Put x in the ratio.

As we know that sum of all angles of a triangle is 180°.

According to question :-

3x + 7x + 8x = 180°

→ 18x = 180°

→ x = 180°/18

→ x = 10°

• 3x = 3 × 10 = 30°
• 7x = 7 × 10 = 70°
• 8x = 8 × 10 = 80°