Name: Parallel, Intersecting and Perpendicular Lines
Uploaded: 2019-07-19
Duration: 3 min 52 s
Description: You will understand the concept of intersecting lines and non-intersecting lines through the example of vehicles on the road by watching this video. Learn th...

Question

Match the following:

(i)	Straight angle	(a)	Less than one-fourth of a revolution
(ii)	Right angle	(b)	More than half of revolution
(iii)	Acute angle	(c)	Half of a revolution
(iv)	Obtuse angle	(d)	One-fourth of a revolution
(v)	Reflex angle	(e)	Between $\frac{1}{4}$ and $\frac{1}{2}$ of a revolution

Accepted Answer

We have,

Straight angle is $180 °$ and one complete revolution is $360 °$

Now, $\frac{180 °}{360 °} = \frac{1}{2}$

Therefore, straight angle is half of revolution.
Right angle is $90 °$ and $\frac{90 °}{360 °} = \frac{1}{4}$

Therefore, right angle is $\frac{1}{4}$ of revolution.

Acute angle is an angle between $0 °$ to $90 °$ .

Therefore, it implies less than one-fourth of a revolution.
Obtuse angle is an angle between $90 °$ to $180 °$ and $\frac{180 °}{360 °} = \frac{1}{2}$

Therefore, it implies between $\frac{1}{4}$ and $\frac{1}{2}$ of a revolution.
Reflex angle is an angle greater than $180^{o}$ .

Thus, it implies more than half a revolution.

Hence, the completed table is as follows:

(i) Straight angle (c) Half of a revolution

(ii) Right angle (d) One-fourth of a revolution

(iii) Acute angle (a) Less than one-fourth of a revolution

(iv) Obtuse angle (e) Between $\frac{1}{4}$ and $\frac{1}{2}$ of a revolution

(v) Reflex angle (b) More than half of a revolution

Important Questions on Understanding Elementary Shapes

Learn and Prepare for any exam you want !

Match the following: (i) Straight angle (a) Less than one-fourth of a revolution (ii) Right angle (b) More than half of revolution (iii) Acute angle (c) Half of a revolution (iv) Obtuse angle (d) One-fourth of a revolution (v) Reflex angle (e) Between 14 and 12 of a revolution

Important Questions on Understanding Elementary Shapes

Learn and Prepare for any exam you want !