3 years ago

Two of the angles in a triangle measure 56° and 21°. What must be the measure of the third angle?

Mathematics

2 answers:

ELEN [110]3 years ago

5 0

Step-by-step explanation:

the sum of all interior angles in triangle is 180°

180-(56+21)=103°

the third angle is 103°

mel-nik [20]3 years ago

4 0

Answer:

282

Step-by-step explanation:

56+21 = 78

360-78

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