Answer:
130
Step-by-step explanation:
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Answer: 40 degrees
The 3 angles of a triangle must add up to 180 degrees.
Let's say this is triangle ABC and angle A has a measure of 100 degrees.
That leaves 80 degrees to be split evenly between angles B and C.
80/2 = 40, so angles B and C must each be 40 degrees.
Sorry the Length is 18, while the width/breadth is 10
