Naming Angles Worksheet

**Page 3**

21.

Which of the following cannot be the measure of any angle in the figure?

a. | 75 ^{o} | ||

b. | 60 ^{o} | ||

c. | 90 ^{o} | ||

d. | 120 ^{o} |

No angle in the figure is a right angle.

So, no angle in the figure can measure 90

Correct answer : (3)

22.

Which of the figures have congruent angles?

a. | Figure (a) and Figure (d) | ||

b. | Figure (a) and Figure (b) | ||

c. | Figure (b) and Figure (c) | ||

d. | Figure (c) and Figure (d) |

Angle in the figures (a) and (b) measures acute angles.

Angle in the figure (c) measures right angle.

Angle in the figure (d) measures an obtuse angle.

Figure (a) and (b) represents the acute angles and also measure of the angles look like same.

So figure (a) and figure (b) are congruent angles.

Correct answer : (2)

23.

Sum of two obtuse angles is an obtuse angle. Is the statement true or false?

a. | True | ||

b. | False |

Sum of two obtuse angles is always more than 180

So, the statement is false.

Correct answer : (2)

24.

Choose the pair of angles whose sum is equal to a straight angle.

a. | Figure 1 and Figure 3 | ||

b. | Figure 1 and Figure 2 | ||

c. | Figure 1 and Figure 4 | ||

d. | Figure 2 and Figure 3 |

The sum of the angles in Figure 1 and Figure 3 = 105

So, the sum of the angles in Figure 1 and Figure 3 is equal to a straight angle.

Correct answer : (1)