Question

question 3 (5 points)
an angle that measures exactly $180^\circ$ is known as a/an \\_\\_\\_\\_ angle.
a) acute
b) obtuse
c) straight
d) right

Explanation:

To solve this, we recall angle definitions:

• Acute angles are less than \(90^\circ\).
• Obtuse angles are greater than \(90^\circ\) but less than \(180^\circ\).
• A straight angle measures exactly \(180^\circ\).
• A right angle measures \(90^\circ\).

Since the angle here is \(180^\circ\), it is a straight angle.

Answer:

C) straight