Straight Line Angle

Q.

A straight angle is equal to ___ right angle(s).

1. 1

2. 4

3. 3

4. 2

Q.

A __________ is a pair of adjacent angles whose non-common arms are in opposite direction.

Q.

In the given figure, line AB and CD intersect at O. If $\angle COB=x^{\circ }$, $\angle BOD=4x^{\circ }$ and $\angle AOD=y^{\circ }$, then y= ______ .

1. ${42}^{\circ }$
2. ${18}^{\circ }$
3. ${30}^{\circ }$
4. ${36}^{\circ }$

Q. Find the value of $x$ in the figure given below.

1. ${60}^{\circ }$
2. ${30}^{\circ }$
3. ${90}^{\circ }$
4. ${45}^{\circ }$

Q. The sum of the measures of angles at a point in degrees is

1. $0^{\circ }$
2. ${180}^{\circ }$
3. ${360}^{\circ }$
4. ${90}^{\circ }$

Q. Find the number of right angles turned through by the hour hand of a clock when it goes from $3$ to $6$.

Q. Find the value of $b$ in the figure given below.

1. ${90}^{\circ }$
2. ${20}^{\circ }$
3. ${120}^{\circ }$
4. ${100}^{\circ }$

Q. How many right angles are there in the above name?

Q.

In the figure below, a ray OC extends from a point O on a straight line AB. If $\angle$AOC = ${135}^{\circ }$. Find $\left(\frac{\angle BOC}{3}\right)$.

1. 

2. 

3. 

4. 

Q.

Find the measure of a straight angle?

Q. What does the angle made by the hour hand of the clock look like when it moves from $5$ to $7$. Is the angle moved more than $1$ right angle?

Q. Find the value of $x$ in the figure given below.

1. ${60}^{\circ }$
2. ${45}^{\circ }$
3. ${30}^{\circ }$
4. ${90}^{\circ }$

Q.

What is the measure of a right angle and a straight angle?

Q.

AOB is straight line. The value of $\angle AOP$ is ___.

1. ${70}^{\circ }$

2. ${110}^{\circ }$

3. ${60}^{\circ }$

4. ${120}^{\circ }$

Q. In the given figure, lines $AB$ and $CD$ intersect at point $O$

(iv). Name all the reflex angles formed and write the measure of each

Q. How many right angles are there on the outside of the figure shown?

1. $2$
2. $4$
3. $6$
4. $8$

Q. Find the number of right angles turned through by the hour hand of a clock when it goes from $5$ to $11$.

Q.

The measure of a straight angle is _____________

Q.

In the figure below, straight lines AB and CD intersect at O. If $\angle$AOC + $\angle$BOE = ${70}^{\circ }$ and $\angle$BOD = ${40}^{\circ }$, find (2$\angle$BOE).

1. 

2. 

3. 

4. 

Q.

Adjacent angles on a straight line add upto ___.

1. 180°

2. 90°

3. 360°

4. 270°

Q.

In the figure shown, lines l and m are parallel and lines r and t are transversals. Find x.

1. ${75}^{\circ }$

2. ${60}^{\circ }$

3. ${45}^{\circ }$

4. ${105}^{\circ }$

Q.

In the given figure, AB is a straight line. If $\angle AOC={50}^{\circ }$ and $\angle DOB={60}^{\circ }$, then x = ______ .

1. ${70}^{\circ }$
2. ${80}^{\circ }$
3. ${90}^{\circ }$
4. ${60}^{\circ }$

Q.

In the given figure, if $\angle AOC$ = 65°, then $\angle COB$ = ___.

1. ${115}^{\circ }$

2. ${65}^{\circ }$

3. ${25}^{\circ }$

4. ${70}^{\circ }$

Q.

In the figure, two lines intersect at O. If x = ${75}^{\circ }$, find $\angle u$ + $\angle y.$

Q. How much angle will move a Minute hand of clock in $60$ minutes?

1. $90$ Degree
2. $180$ Degree
3. $0$ Degree
4. $360$ Degree

Q.

What type of angles are obtained on bisecting an obtuse angle?

Q. Find the measure of the angle between the hands of the clock in each figure: