Question

ch angle of the
of the sides of the triangle.
12. The angles of a triangle are in the ratio 3:5: 7. Find the measure of each
triangle
(Hint: We know that the sum of the angles of a triangle is 180º.
11 Y
a ndant ie 191 find ite connes​

Answer 1

Answer:

Ratio of the angles of a triangle = 3:5:7

Let the three angles be 3x 5x and 7x respectively.

In a triangle, The sum of the three angles of a triangle = 180°

So, 3x + 5x + 7x = 180°

15x = 180°

x = 180/15 = 12

Therefore,

3x = 3 × 12 = 36

5x = 5 × 12 = 60

7x = 7 × 12 = 84

Answer 2

Answer:

Let,the angles be 3x,5x & 7x

and the sum be 180°

such that,3x+5x+7x=180°

=>15x=180°

=>x=180°/15

=>x=12

so,,1st angle 3x=3×12=36°

2nd angle 5x=5×12=60°

3rd angle 7x=7×12=84°