Classification of Angles Based on Degree

Q. An angle whose measure is greater than 90°, but less than 180° is called a/an ______ angle

1. acute
2. obtuse
3. right
4. straight

Q.

Measure and classify each angle:

Angle	Measure	Type
∠AOB	-	-
∠AOC	-	-
∠BOC	-	-
∠DOC	-	-
∠DOA	-	-
∠DOB	-	-

Q.

If the side of a triangle are produced, then the sum of the exterior angles i.e. a+b+c is equal to

1. 90°

2. 270°

3. 180°

4. 360°

Q.

When the sum of the measures of two angles is that of a straight angle and if one of them is acute, then the other should be

Q. Refer the figure below. Find out one acute angle and one straight angle.

1. $\angle$COB and $\angle$AOE
2. $\angle$FOE and $\angle$AOC
3. $\angle$AOE and $\angle$EOB
4. $\angle$COB and $\angle$AOB

Q.

In the following figure$,$ write all angles$.$

Q.

Find the value of (x+y) from the figure below:

1. 60

2. 120

3. 80

4. 45

Q. Which of the following angles will have highest degree of measurement?

1. Acute angle
2. Right angle
3. Obtuse angle
4. Straight angle

Q. Classify the following angles.

1. (a) Right angle (b) Acute angle (c) Obtuse angle
2. (a) Right angle (b) Obtuse angle (c) Acute angle
3. (a) Acute angle (b) Right angle (c) Obtuse angle
4. (a) Acute angle (b) Obtuse angle (c) Right angle

Q. From the figure, $\angle ADC$ is a/an _____ .

1. acute angle
2. obtuse angle
3. straight angle
4. right angle

Q.

In the given figure, BD = AD and DC = AC, If $\angle ABC={35}^{\circ },$ then $x^{\circ }$ = ___.

1. ${30}^{\circ }$

2. ${35}^{\circ }$

3. ${40}^{\circ }$

4. ${45}^{\circ }$

Q.

Can we have two acute angles whose sum is a reflex angle.Why or why not?

Q.

Consider the figure:

If BC = AC, x = 2y, and angle ACB = 60^o, then find the value of $\angle$A + $\angle$B + $\angle$x + $\angle$y (in degrees).

___

Q.

Can we have two acute angles whose sum is an acute angle? Why or why not?

Q.

If the sum of measures of two angles is $180°$ and one of them is acute, then the other is a/an_____.

Q.

Can we have two acute angles whose sum is a straight angle.Why or why not?

Q. Sum of two acute angles will always be an acute angle.

1. True
2. False

Q.

Which of the following is an acute angle?

1. 

2. 

3. 

4. 

Q.

In the adjoining figure, the angles AOC and COB are ______ angles.

1. Obtuse

2. Right

3. Reflex

4. Acute

Q. Indicate which pairs of angles are vertically opposite angles.
[1 mark]

Q.

Fill in the blank with acute, obtuse, right, reflex or straight angle.

When the sum of the measures of two angles is a right angle, each one of them is a /an ____________ .

Q. Match the following:

1. ${90}^{\circ }$
2. ${60}^{\circ }$
3. ${130}^{\circ }$
4. ${180}^{\circ }$

Q. Refer the figure below. Find out one acute angle and one straight angle.

1. $\angle$FOE and $\angle$AOC
2. $\angle$AOE and $\angle$EOB
3. $\angle$COB and $\angle$AOE
4. $\angle$COB and $\angle$AOB

Q. ${180}^{\circ }$ is also called as:

1. Acute angle
2. Right angle
3. Obtuse angle
4. Straight angle

Q.

Which of the following can be classified as the smaller angle between the hour hand and minute hand at 8 o'clock?

1. Right Angle

2. Obtuse Angle

3. Straight Angle

4. Acute Angle

Q. Choose the correct angles.

1. Acute angle
2. 90°
3. Reflex angle
4. Straight angle
5. 45°
6. 149°
7. Obtuse angle
8. 270°
9. 180°
10. Right angle

Q.

Which of the following can be classified as the smaller angle between the hour hand and minute hand at 8 o'clock?

1. Acute Angle

2. Right Angle

3. Obtuse Angle

4. Straight Angle

Q. Classify the following angles.

1. (a) Acute angle (b) Obtuse angle (c) Right angle
2. (a) Right angle (b) Acute angle (c) Obtuse angle
3. (a) Right angle (b) Obtuse angle (c) Acute angle
4. (a) Acute angle (b) Right angle (c) Obtuse angle

Q. Burst out the obtuse angles.

1. 30°
2. 120°
3. 170°
4. 135°
5. 55°
6. 95°
7. 125°
8. 150°