Straight and Reflex Angle

Q. What fraction of a straight angle is a right angle?

1. $\frac{1}{2}$
2. $\frac{1}{3}$
3. $\frac{1}{4}$
4. $\frac{3}{4}$

Q.

Write down the measure of: (a) Some acute angles (b) Some obtuse angles (give at least two examples of each)

Q. Match the following.

1. $={90}^{\circ }$
2. $={180}^{\circ }$
3. $<{90}^{\circ }$ , $>0^o$
4. $>{180}^o$, $<{360}^o$

Q. Which of the following angles is not reflex?

1. ${179}^{\circ }$
2. ${320}^{\circ }$
3. ${359}^{\circ }$
4. ${181}^{\circ }$

Q.

How many reflex angles are inside the below given shape?

1. 16
2. 12
3. 8
4. 4

Q. What is the least number of ${35}^{\circ }$ angles you would need to make a reflex angle?

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

Q.

An angle whose measure is greater than $180°$ but less than $360°$ is called ____________ angle

1. obtuse

2. complete

3. reflex

4. straight

Q.

In the given figure, $\angle$ ABC is a straight angle. If x = ${53}^{\circ }$, then find y.

1. ${150}^{\circ }$

2. ${147}^{\circ }$

3. ${127}^{\circ }$

4. ${37}^{\circ }$

Q. Which one of the following angles is reflex ?

1. A
2. B
3. C
4. D

Q.

An angle whose measure is greater than $90$$°$ but less than $180$$°$ is called a/an

1. Reflex angle

2. Complete angle

3. Obtuse angle

4. Acute angle

Q.

A ___ angle always measures more than a straight angle

1. Reflex angle

2. Whole angle

3. Obtuse angle

4. Acute angle

Q. Sam cuts out one fourth portion from a circular orange slice. The remaining portion forms a/an angle .

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

Q.

The angle measuring $180°$ is called

1. right angle

2. straight angle

3. parallel angle

4. acute angle

Q.

What is the measure of a straight angle?

1. ${360}^{\circ }$

2. ${270}^{\circ }$

3. ${90}^{\circ }$

4. ${180}^{\circ }$

Q. Which angle is shown by the hands of the clock in the given figure?

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

Q.

By simply looking at the pairs of angles given in the figure, state which angle in each of the pairs is greater:

Q.

What is the measure of a straight angle?

1. 
2. 

Q.

By measuring these three angles, tell which has the greatest measure?

1. 

2. 

3. 

Q.

Specify the following angles as acute, obtuse, right, straight, or reflex

(d) $\angle BCD$

Q.

Looking at the pair of angles, state which of the angle in each of the pair is greater:

Q.

What fraction of a straight angle is a right angle .

Q. Number of angles formed in the given figure is(if the given figure is in $2$ D)

1. $3$
2. $2$
3. $1$
4. $4$