Name: Measure of an Angle
Uploaded: 2019-07-19
Duration: 1 min 48 s
Description: An angle made by two line segments is measured using a geometrical tool called the protractor. A complete angle around a point is 360 degrees. Watch this vid...

Question

Give two examples each of right, acute and obtuse angles from your environment.

Accepted Answer

An angle whose measure is equal to $90 °$ is called a right angle.

Two examples of right angle in our environment are:

(i) The angle formed by the two adjacent walls of a room is a right angle.

(ii) The angle formed by the two adjacent edges of a book is a right angle.

An angle whose measure is greater than $0 °$ but less than $90 °$ is called acute angle.

Two examples of acute angle in our environment are:

(i) The angle formed between the two adjacent fingers of our hand.

(ii) The angle between the two adjacent sides of the letter $Z$ of English alphabet.

An angle whose measure is greater than $90 °$ but less than $180 °$ is called obtuse angle.

Two examples of obtuse angle in our environment are:

(i) The smaller angle formed by the two adjacent blades of a fan.

(ii) The smaller angle formed by the two sloping sides of a roof of a hut is an obtuse angle.

Give two examples each of right, acute and obtuse angles from your environment.

Important Questions on Angles

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