Question

1. The points A, B, and C are collinear. If AB=x+5, BC=2x+3, and AC=4x−7, then what is the exact length of BC?

2. Find the sum of the measures of the interior angles of a regular polygon if the exterior angle measures 36.

3. Three exterior angles of a pentagon measure 60, 80, and 90. Find the measures of the other two exterior angles, assuming they are equal.

4. How many sides have a convex polygon if the sum of the interior angles is 10260∘?

Answer 1

Answer:

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Step-by-step explanation: