3 years ago

I need help with this question

Mathematics

2 answers:

tankabanditka [31]3 years ago

7 0

I think the answer is A. 40

n200080 [17]3 years ago

3 0

The correct answer is B) 50.

Straight lines add up to 180 degrees. The outside angle measurements given would tell us that the two known angles are 40 (180-140=40) and 90 (180-90=90). Since triangles must add up to 180 degrees, we take 180-90-40= 50, which is the measure of the missing angle.

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