Question

angle fgh is a right angle. the measure of angle fgj is 40°. the measure of angle jgh is x°. what is the value of x?

Explanation:

Step1: Recall right - angle property

$\angle FGH = 90^{\circ}$

Step2: Use angle addition

$\angle FGJ+\angle JGH=\angle FGH$, so $40^{\circ}+x^{\circ}=90^{\circ}$

Step3: Solve for x

$x = 90 - 40$

Answer:

$x = 50$