Question

Triangle ABC is a right triangle.

Triangle A B C. Angle A is x degrees, B is 90 degrees, C is (x minus 10) degrees. The exterior angle to angle C is (2 x + 40) degrees.

Which equations can be used to find the value of x? Check all that apply.
x + 90 + (x minus 10) = 180
x + 90 + (2 x + 40) = 180
2 x + 80 = 180
x + 90 = 2 x + 40
(x minus 10) + 90 = 2 x + 40

Answer 1

A) X+90+ (x-10) - 180

C) 2x+80 = 180

D) x+90 = 2x+40

Explanation:

Answer 2

x + 90 + (x minus 10)= 180° can be used to find the value of x.