3 years ago

Determine the measure of the angle in ?

Mathematics

1 answer:

Fofino [41]3 years ago

4 0

Answer:

? = 30°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

48° is an exterior angle of the triangle, then

? + 18° = 48° ( subtract 18° from both sides )

? = 30°

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