Question

angle rst is a right angle. angle rsu has a measure of 25°. what is the measure of angle tsu? 25° 45° 65° 75°

Explanation:

Step1: Recall right - angle property

A right - angle measures 90°. So, $\angle RST = 90^{\circ}$.

Step2: Use angle - addition relationship

We know that $\angle RST=\angle RSU+\angle TSU$. Given $\angle RSU = 25^{\circ}$, we can find $\angle TSU$ by the formula $\angle TSU=\angle RST-\angle RSU$.

Step3: Calculate $\angle TSU$

Substitute the values: $\angle TSU = 90^{\circ}-25^{\circ}=65^{\circ}$.

Answer:

C. 65°