## Engage NY Eureka Math 4th Grade Module 4 Lesson 7 Answer Key

### Eureka Math Grade 4 Module 4 Lesson 7 Practice Sheet Answer Key

Figure 1

The angle WYX would be 60° or above but less 90° and the angle is called an acute angle.

Explanation:
Here, the angle <WYX would be an acute angle. As In the above image, we can see that the angle is less than 90°. So the angle would be 60° or above but less 90° and the angle is called an acute angle.

Figure 2

The angle CAB would be 60° or above but less 90° and the angle is called an acute angle.

Explanation:
Here, the angle <CAB would be an acute angle. As In the above image, we can see that the angle is less than 90°. So the angle would be 60° or above but less 90° and the angle is called an acute angle.

Figure 3

The above angle DEF is 120°.

Explanation:
By measuring the angle DEF with a protractor we will get the angle as 120° and it is an obtuse angle as the angle is greater than 90°.

Figure 4

The above angle QRS is 120°.

Explanation:
By measuring the angle QRS with a protractor we will get the angle as 120° and it is an obtuse angle as the angle is greater than 90°.

### Eureka Math Grade 4 Module 4 Lesson 7 Problem Set Answer Key

Construct angles that measure the given number of degrees. For Problems 1–4, use the ray shown as one of the rays of the angle with its endpoint as the vertex of the angle. Draw an arc to indicate the angle that was measured.

Question 1.
30°

The 30° angle is an acute angle.

Explanation:
Here, we have constructed a 30° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 30° angle.

Question 2.
65°

The 65° angle is an acute angle.

Explanation:
Here, we have constructed a 65° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 65° angle.

Question 3.
115°

The 115° angle is an obtuse angle.

Explanation:
Here, we have constructed a 115° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 115° angle.

Question 4.
135°

The 135° angle is an obtuse angle.

Explanation:
Here, we have constructed a 135° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 135° angle.

Question 5.

The 5° angle is an acute angle.

Explanation:
Here, we have constructed a 5° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 5° angle.

Question 6.
175°
The 175° angle is an obtuse angle.

Explanation:
Here, we have constructed a 175° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 175° angle.

Question 7.
27°
The 5° angle is an acute angle.

Explanation:
Here, we have constructed a 5° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 5° angle.

Question 8.
117°
The 117° angle is an obtuse angle.

Explanation:
Here, we have constructed a 117° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 117° angle.

Question 9.
48°
The 48° angle is an acute angle.

Explanation:
Here, we have constructed a 48° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 48° angle.

Question 10.
132°
The 132° angle is an obtuse angle.

Explanation:
Here, we have constructed a 132° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 132° angle.

### Eureka Math Grade 4 Module 4 Lesson 7 Exit Ticket Answer Key

Construct angles that measure the given number of degrees. Draw an arc to indicate the angle that was measured.

Question 1.
75°
The 75° angle is an acute angle.

Explanation:
Here, we have constructed a 75° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 75° angle.

Question 2.
105°
The 105° angle is an obtuse angle.

Explanation:
Here, we have constructed a 105° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 105° angle.

Question 3.
81°
The 81° angle is an acute angle.

Explanation:
Here, we have constructed a 81° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 81° angle.

Question 4.
99°
The 99° angle is an obtuse angle.

Explanation:
Here, we have constructed a 99° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 99° angle.

### Eureka Math Grade 4 Module 4 Lesson 7 Homework Answer Key

Construct angles that measure the given number of degrees. For Problems 1–4, use the ray shown as one of the rays of the angle with its endpoint as the vertex of the angle. Draw an arc to indicate the angle that was measured.

Question 1.
25°

The 25° angle is an acute angle.

Explanation:
Here, we have constructed a 25° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 25° angle.

Question 2.
85°

The 85° angle is an acute angle.

Explanation:
Here, we have constructed a 85° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 85° angle.

Question 3.
140°

The 140° angle is an obtuse angle.

Explanation:
Here, we have constructed a 140° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 140° angle.

Question 4.
83°

The 83° angle is an acute angle.

Explanation:
Here, we have constructed a 83° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 83° angle.

Question 5.
108°
The 108° angle is an obtuse angle.

Explanation:
Here, we have constructed a 108° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 108° angle.

Question 6.
72°
The 72° angle is an acute angle.

Explanation:
Here, we have constructed a 72° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 72° angle.

Question 7.
25°
The 25° angle is an acute angle.

Explanation:
Here, we have constructed a 25° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 25° angle.

Question 8.
155°
The 155° angle is an obtuse angle.

Explanation:
Here, we have constructed a 155° angle using a protractor and it is an obtuse angle as the angle is greater than 90°. The below image represents the 155° angle.

Question 9.
45°
The 45° angle is an acute angle.

Explanation:
Here, we have constructed a 45° angle using a protractor and it is an acute angle as the angle is less than 90°. The below image represents the 45° angle.

Question 10.
135°