Question

The measure of the angles of triangle are shown in the figure. On the basis of this what kind of ∆ can be formed in the figure.

● equilateral ∆
● isosceles ∆
● right angled ∆
● scalene ∆​

Answer 1

A+B+C=180

4x-12+5x+12+6x=180

15x=180

x=180/15

x=12

A=36°

B=72°

C=72°

As angle B and C are equal so ∆ABC is isosceles

Answer 2

Step-by-step explanation:

A+B+C=180

4x-12+5x+12+6x=180

15x=180

x=180/15

x=12

A=36⁰

B=72⁰

C=72⁰

As angle B and C are equal so,∆ABC is isosceles