Given a polygon with 16 sides, find the sum of the measures of its interior angles. A polygon with 16 sides has an interior angle measure sum of

Can someone show me step by step how to do this?

Select the correct answer. given: ∆abc with prove: statement reason 1. given 2. ∠cab ≅ ∠edb ∠acb ≅ ∠deb if two parallel lines are cut by a transversal, the corresponding angles are congruent. 3. ∆abc ~ ∆dbe aa criterion for similarity 4. corresponding sides of similar triangles are proportional. 5. ab = ad + db cb = ce + eb segment addition 6. substitution property of equality 7. division 8. subtraction property of equality what is the missing statement in the proof? scroll down to see the entire proof.

One angle of a linear pair is 10 more than two-thirds the other angle. find the measure of both angles.