Question

prove that the sum of all angle of a triangle is 180° .also find the angle of a triangle if thay are in the ratio 5:6:7​

Answer 1

Let angles be 5x,6x and 7x..

5x+6x+7x=180

=18x=180

X=10

Angles are -

10×5=50°

10×6=60°

10×7=70°

Answer 2

Step-by-step explanation:

Given

the sum of angle of the triangle is 180°

the given ratio is 5:6:7

let the ratios be 5=5x

6=6x

7=7x

=5x+6x+7x= 180

=18x=180

= x =180/18

= x=10

5x=5(10)= 50

6x=6(10)=60

7x=7(10)=70

the angles are 50,60,70

hense proved