3 years ago

Could someone help me please

Mathematics

2 answers:

Rina8888 [55]3 years ago

7 0

I think A is 60 because 30+90=120+60=180

Nina [5.8K]3 years ago

3 0

Answer:

The first one is m A + 30 + 90 = 180

Second is 60

Step-by-step explanation:

A triangle’s added up angles ALWAYS equals 180.

The formula here is to subtract the two known angles from 180 and the answer leaves you with the unknown angle.

180 - 90 - 30 = A

So,

180 - 90 - 30 = 60

You can check by adding all the angles and it adding up to 180

90 + 30 + 60 = 180

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