Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles

Practice the problems of Math in Focus Grade 4 Workbook Answer Key Chapter 9 Practice 3 Turns and Right Angles to score better marks in the exam.

Find the measure of each angle.

Question 1.
$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 1$
A $\frac{1}{2}$-turn is ____.
Answer:
180°.

Explanation:
Here, a $\frac{1}{2}$-turn is 180°.

Question 2.
$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 2$
A $\frac{3}{4}$-turn is ____.
Answer:
270°.

Explanation:
Here, a $\frac{3}{4}$-turn is 270°.

Fill in the blanks.

Question 3.
$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 3$
A ___ -turn is 90°
Answer:
$\frac{1}{4}$.

Explanation:
Here, a $\frac{1}{4}$-turn is 90°.

Question 4.
$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 4$
A ___ -turn is 360°
Answer:
1 -turn.

Explanation:
Here, a 1 -turn is 360°.

Look at the three pairs of angle strips shown.

$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 5$

Which pair of angle strips shows

Question 5.
$\frac{1}{2}$ turn? ___________
Answer:
∠c.

Explanation:
In the above images, ∠c is a $\frac{1}{2}$ turn which is 180°.

Question 6.
a straight angle? ____
Answer:
∠c.

Explanation:
In the above images, ∠c is a $\frac{1}{2}$ turn which is 180°.

Question 7.
a turn between $\frac{1}{2}$-turn and $\frac{3}{4}$-turn? ____
Answer:
225°.

Explanation:
a turn between $\frac{1}{2}$-turn and $\frac{3}{4}$-turn is 225°.

Look at the three pairs of angle strips shown.

$Math in Focus Grade 4 Chapter 9 Practice 3 Answer Key Turns and Right Angles 6$

Which pair of angle strips shows

Question 8.
360°? _________
Answer:
1 turn.

Explanation:
In the above images, ∠D is a 1 turn which is 360°.

Question 9.
an angle between 180° and 360°? ___________
Answer:
$\frac{3}{4}$.

Explanation:
In the above images, ∠F is a $\frac{3}{4}$ turn which is 270°.

Complete.

Question 10.
180° makes up ___ of a full turn.
Answer:
180° makes up half of a full turn.

Explanation:
Here, 180° makes up half of a full turn. As 360° makes a full turn.

Question 11.
Three right angles make up a __ -turn
Answer:
Three right angles make up a $\frac{3}{4}$ -turn.

Explanation:
Here, three right angles make up a $\frac{3}{4}$ -turn which is 270°.

Question 12.
105° is between a ___-turn and a ___-turn.
Answer:
105° is between a $\frac{1}{4}$-turn and a $\frac{1}{2}$-turn.

Explanation:
105° angle lies between a $\frac{1}{4}$-turn and a $\frac{1}{2}$-turn.