How many sides does a polygon have if the sum of the interior angles is 900

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Zack notices that segment nm and segment pq are congruent in the image below: which step could him determine if δnmo ≅δpqr by sas? (5 points) segment mo ≅ segment qr segment on ≅ segment qp ∠ n ≅ ∠ r ∠ o ≅ ∠ q

Factor the polynomial. b^2 + 4b + 4