Angle and Its Components

Q. If the arms of an angle on the paper are increased, the angle increases.

1. True
2. False

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. 04:30

2. 04:00

3. 06:00

4. 09:00

Q.

The measure of an acute angle < 90$°$.

1. True
2. False

Q.

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

1. 04:00

2. 04:30

3. 06:00

4. 09:00

Q. When three lines intersect at three points, how many angles will be formed?

1. 3
2. 6
3. 12
4. 24

Q. If three lines intersect at three points, 12 number of angles are formed?

1. True
2. False

Q.

Which point is interior to $\angle$$ABC?$

1. P
2. Q
3. R
4. B

Q. Angles are measured in ____.

1. centimetres
2. metres
3. celsius
4. degrees

Q. Point D lies in the exterior of $\angle$ ABC

1. False
2. True

Q. An angle which measures more than 180° but less than 360° is called
(a) an acute angle
(b) an obtuse angle
(c) a straight angle
(d) a reflex angle

Q. Which point is interior to $\angle$$ABC$?

1. B
2. R
3. P
4. Q

Q.

From the figure given below , name the three acute angles formed.

1. $\angle CAB,\angle BDA,\angle BCD$

2. $\angle ABC,\angle DBC,\angle DBA$

3. $\angle ACB,\angle BDA,\angle BCD$

4. $\angle BDA,\angle ABC,\angle BCD$

Q.

A ray OC is constructed on the line segment AB such that ∠BOC is x${}^{\circ }$. What will be the measure of ∠AOC in terms of x?

1. 180${}^{\circ }$ - x${}^{\circ }$

2. 90${}^{\circ }$ - x${}^{\circ }$

3. 360${}^{\circ }$ - x${}^{\circ }$

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

Q. How many angles does the following figure has?

1. 10
2. 6
3. 7
4. 5

Q. How many angles are formed when three lines intersect at three points?

1. 8
2. 15
3. 12
4. 9

Q.

When three lines intersect at three points, how many angles are formed?

1. 3
2. 6
3. 24
4. 12

Q. Identify the type of angles for following:

(i)

(ii)
(iii)

Q.

When three lines intersect each other at three different points, then how many angles will be formed?

1. 6

2. 12

3. 3

4. 24

Q.

In the given figure, the three acute angles present are ___

1. $\angle ABC$, $\angle DBC$, $\angle DBA$
2. $\angle CAB$, $\angle BDA$, $\angle BCD$
3. $\angle ACB$, $\angle BDA$, $\angle BCD$
4. $\angle BDA$, $\angle ABC$, $\angle BCD$

Q. Classify each one of the following angles as right, straight, acute, obtuse or reflex: