Question

3) Two angles of a triangle measure 90° and 30°. The measure of the third
angle is *
90°
30
60°
120*​

Answer 1

Answer:

(iii). 60°

Step-by-step explanation:

The sum of angles of a triangle is 180°.

The two of the angles are 90° and 30°.

So,

       the another angle= 180 °- ( 90+30)°

                                     =180° - 120°

                                     =60°

Answer 2

Angle sum property of triangle = 180°

There are three angles in one triangle

So, Given:-

First angle = 90°

Second angle = 30°

To find = Third angle = ?

Solution :-

1st angle + 2nd angle + 3rd angle = 180° [ASP]

90° + 30° + 3rd angle = 180°

120° + 3rd angle = 180°

3rd angle = 180° - 120°

3rd angle = 60° [Answer]