Question

assignment 1.5 measuring and classifying angles
classify each angle as acute, obtuse, right, or straight.
1)
2)
3)
4)

Explanation:

1)

Step1: Recall angle definitions

A straight angle is \( 180^\circ \), formed by a straight line. The first angle's rays are colinear (form a straight line).

Step2: Classify the angle

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

Step1: Recall angle definitions

An acute angle is less than \( 90^\circ \). The second angle appears to be less than a right angle ( \( 90^\circ \) ).

Step2: Classify the angle

As it is less than \( 90^\circ \), it is an acute angle.

Step1: Recall angle definitions

An obtuse angle is greater than \( 90^\circ \) but less than \( 180^\circ \). The third angle appears to be greater than \( 90^\circ \) and less than \( 180^\circ \).

Step2: Classify the angle

Since it is between \( 90^\circ \) and \( 180^\circ \), it is an obtuse angle.

Answer:

Straight

2)