1 year ago

Angle Sum Theorem. y = ?

Mathematics

1 answer:

salantis [7]1 year ago

8 0

Answer:

90°

Step-by-step explanation:

Interior angles of ALL triangles sum to 180°

The whole large triangle has angles 60 60 60 ( they sum to 180)

that means x = 30

then the small triangle on the right has 60 + 30 + y = 180

meaning y = 90 °

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