Acute, Obtuse and Reflex Angle

Q.

Find the reflex angle corresponding to each of the following angles: $25°32$

Q.

If we have $\angle$ABC as $theta$, reflex $angle$ABC is equal to ________________.

1. 360º - θ

2. 180º - θ

3. 360º + θ

4. -180º + θ ​

Q. What is the measure and type of the angle included between the hour hand and the minute hand, if the time shown by the watch is 06:30?

Q.

Write down the measure of some obtuse angles ?

Q.

If we consider the angle made between the hour hand and the minute hand, which of the following times make an acute angle?

1. 09:00

2. 04:30

3. 05:00

4. 06:00

Q.

Ram and Shyam were playing with a ball in the room. They somehow managed to break the window pane. Now, they both peered out of the window (shown in the figure below) and made the following statements:

Ram: The bars in the window make right angle.

Shyam: The bars in the window make acute angle.

1. Both are incorrect.

2. Ram is correct, Shyam is also correct.

3. Ram is correct, Shyam is incorrect.

4. Ram is incorrect, Shyam is correct.

Q. Which of the following is an acute angle?

1. 67 degrees
2. 145 degrees
3. 250 degrees
4. 195 degrees

Q.

State whether the following statement is true or false.

180${}^{\circ }$ is an example of an obtuse angle.

1. True

2. False

Q. If the sum of two angles is less than 90°, then the angles are:

1. right angles
2. obtuse angles
3. acute angles
4. reflex angles

Q. The angle which is greater than 90° but less than 180 ° is known as ________.

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

Q. Which of the following is a reflex angle?

1. 210 degrees
2. 145 degrees
3. 90 degrees
4. 67 degrees

Q. The sum of two angles is 180 ° and if one angle is obtuse, then the other one will be ___.

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

Q. The angle which is less than 90° is known as _______.

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