Question

Use algebra to find the value of x in the triangle below. Notice the measurement of the angle is not necessarily the same as the value of x.

X =

2x
х
7x

Answer 1

answer: x=18

explanation

Answer 2

X = 18

Explanation:

the sum of each angle should be 180°, so if you add them all together should give you 180° and from there you change the value for x, and you find each angle.

2x + x + 7x = 180

10x = 180

x = 18

2*18 = 36°

18°

7*18 = 126°