Question

The sum of three angles of a triangle is * A)1 right angle B)Two right angles C)Three right angles D)Four right angles

Answer 1

Answer:

As we know that the sum of all the three angles of a triangle is 180  

∘

 and a right angle is 90  

∘

.

Number of right angles in a triangle =  

90  

∘

 

180  

∘

 

​  

=2

Hence proved.

Say X= smaller acute angle in right triangle  

4X= larger acute angle  

90  

∘

= right angle  

x+4x+90  

∘

=180  

5x=90  

∘

 

x=18  

∘

 

4x=72  

∘

 

Acute angles are 18  

∘

 and 72  

∘

Answer 2

Answer:

THE ANSWER IS:

•OPTION B)

Step-by-step explanation:

•SUM OF 3 ANGLES OF A TRIANGLE - 180°

•ONE RIGHT ANGLE - 90°

SO,2 RIGHT ANGLE - 2 x 90° = 180°

SO,SUM OF THE 3 ANGLES OF TRIANGLE =

2 RIGHT ANGLES.

HOPE IT HELPS YOU.