3 years ago

Two of the angles in a triangle measure 10° and 80°. What is the measure of the third angle?

Mathematics

2 answers:

Gnoma [55]3 years ago

7 0

Step-by-step explanation:

Lets third angle be x

or,10°+x+80°=180° ( sum of triangle )

or,90°+x=180°

or,x=180°-90°

or,x=90°

Bogdan [553]3 years ago

6 0

Answer:

90°

Step-by-step explanation:

All angles inside a triangle add up to 180 so:

180 - 10 - 80 = 90

Therefore, the 3rd angle is 90°

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