Question

question 6(multiple choice worth 2 points)
(14 03 mc)
a right - angle is decomposed into three angles. one angle has a measure of 50°, and the other two angles are equal. what is the measure
45°
40°
25°
20°
question 7(multiple choice worth 2 points)
(14 03 lc)
what is the measure of the unknown angle?

Explanation:

Step1: Recall right - angle measure

A right - angle measures 90°.

Step2: Set up equation

Let the measure of each of the equal angles be $x$. We know that $50 + 2x=90$.

Step3: Solve for $x$

First, subtract 50 from both sides of the equation: $2x=90 - 50$, so $2x = 40$. Then divide both sides by 2: $x=\frac{40}{2}=20$.

Answer:

D. 20°