Question

Two angles of a triangle are forty degrees and thirty degrees. What is the third angle of the triangle?

Answer 1

Answer:

The third angle of the triangle is 110°.

Step-by-step explanation:

Ange sum property states that the sum of interior angle of triangle is equal to 180°.

180 = ( 40 + 30 + x )°

⇒ x = [180 - ( 40 + 30 )]°

      = ( 180 - 70 )°

      = 110°

Answer 2

Answer :

• Third angle of the triangle is 110⁰

Given :

• Two angles of a triangle are 40⁰ and 30⁰

To find :

• Third angle of the triangle

Solution :

• Let the third angle be x
• First angle is 40⁰
• Second angle is 30⁰

As we know that

• Sum of all angles in a triangle is equal to 180⁰

Substituting the value :

↬ 40⁰ + 30⁰ + x = 180⁰

↬ 70⁰ + x = 180⁰

↬ x = 180⁰ - 70⁰

↬ x = 110⁰

Hence, Third angle of the triangle is 110⁰

Verification :

↬ 40⁰ + 30⁰ + x = 180⁰

↬ 40⁰ + 30⁰ + 110⁰ = 180⁰

↬ 70⁰ + 110⁰ = 180⁰

↬ 180⁰ = 180⁰

Hence , Verified