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Find m<1. Triangle Angle-sum theorem

Find m<1. Triangle Angle-sum theorem-example-1

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Answer:

m<1 = 50

Explanation:

We can first find the angle next to 140, by doing 180 - 40 = 40.

Now that we know that one of the triangles angle is 40, we also know that there's a 90 degree angle, so we can do:

180 - 90 - 40 = 50

So m<1 = 50

User Steven Sproat
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