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.

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

**Find the measure of each angle.**

Question 1.

A \(\frac{1}{2}\)-turn is ____.

Answer:

180°.

Explanation:

Here, a \(\frac{1}{2}\)-turn is 180°.

Question 2.

A \(\frac{3}{4}\)-turn is ____.

Answer:

270°.

Explanation:

Here, a \(\frac{3}{4}\)-turn is 270°.

**Fill in the blanks.**

Question 3.

A ___ -turn is 90°

Answer:

\(\frac{1}{4}\).

Explanation:

Here, a \(\frac{1}{4}\)-turn is 90°.

Question 4.

A ___ -turn is 360°

Answer:

1 -turn.

Explanation:

Here, a 1 -turn is 360°.

**Look at the three pairs of angle strips shown.**

**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.**

**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.