Question

Two angles of a triangle measure 50° and 70° respectively. Find the measure of its third angle.​

Answer 1

Answer:

Let the third angle be x

So a/q angle sum property of triangle we have,

70 + 50 + × = 180

120 +× = 180

× = 180 - 120

× = 60°

Therefore third angle is 60°

Answer 2

Answer:

60°.

Step-by-step explanation:

Let the third angle be x.

Angle sum property of a triangle : ∠ A + ∠ B + ∠ C = 180°

50° + 70° + x° = 180°

120° + x° = 180°

x° = 180° - 120°

x° = 60°

∴ The third angle is 60°