3 years ago

What is the value of x? Enter your answer in the box. x = °

Mathematics

2 answers:

Gala2k [10]3 years ago

3 0

Answer:

Step-by-step explanation:

All angles in a triangle add up to 180.

80 + 55 = 135

180 - 135 = 45

yKpoI14uk [10]3 years ago

3 0

Answer:

The answer to your question is: x = 45°

Step-by-step explanation:

We must know that the sum of the internal angles in a triangles equals 180°.

Then ∠A + ∠B + ∠C = 180°

Substitution

55° + 80° + ∠C = 180°

135° + ∠C = 180° Simplification

∠C = 180 - 135

∠C = 45°

∠C = x

x = 45° Result

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