Question

Two angles of a triangle are 30° and 80°. Find the third angle​

Answer 1

Answer:

70°

Step-by-step explanation:

30°+80°=110°

then 180°- 110°=70° Ans.

Answer 2

Answer :-

Third Angle = 70°

Explanation :-

Given :

• Two angles of a triangle are 30° and 80°.

To Find :

• Third Angle.

Solution :

Let the third angle be x.

We know that,

Sum of all angles in Triangle = 180° (ASP).

⇒ 30° + 80° + x° = 180°

⇒ 110° + x° = 180°

⇒ x° = 180 – 110°

⇒ x = 70°

Therefore, Third Angle = 70°

Verification :

Sum of all angles in Triangle = 180° (ASP).

⇒ 30° + 80° + 70° = 180°

⇒ 110° + 70° = 180°

⇒ 180° = 180°

LHS = RHS.

Hence, Verified.