Question

The angles of a triangle are 2x, 3x, and 4x degrees.

Find the value of x.
A) 20
B) 30
C) 40
D) 50

Answer 1

3 angles in a triangle need to = 180 degrees

so you have 2x+3x+4x = 180

9x = 180

x = 180/9

x = 20

Answer is A