# Classify Triangles by Angles

Triangles can be classified **on the basis of angles **as follows:

All three angles are less than 90° |
One angle is exactly 90° |
One angle is more than 90° |

ds

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

### Help

The correct answer is

##### Remember :

The smallest number is the one that comes first while counting.

##### Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.