3 years ago

I need help please help me

Mathematics

1 answer:

IrinaVladis [17]3 years ago

5 0

Answer:

the first one

Step-by-step explanation:

To solve this problem you use the Triangle Angle Sum Theorem concept. Which means all 3 angles of a triangle add up to 180° degrees.

The formula for this concept is:

a+b+c=180°

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