Chapter CSB1.9, Problem 17E

To determine

Angle is acute, obtuse, right or straight.

Answer to Problem 17E

This angle is a straight angle.

Explanation of Solution

Introduction:

Angle:

When two rays meet at a point they form an angle.

The angle which is equal to 180° is known as straight angle.

The angle which is equal to 90° is known as right angle.

The angles which are less than 90° are known as acute angle .

The angles which are more than 90° are known as obtuse angle .

  

Conclusion: This angle is a straight angle.