Question

What is the sum of the measures of the angles of a convex quadrilateral? Will this prog
hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and try!​

Answer 1

Answer:

The Quadrilateral Sum Conjecture tells us the sum of the angles in any convex quadrilateral is 360 degrees. Remember that a polygon is convex if each of its interior angles is less that 180 degree. In other words, the polygon is convex if it does not bend "inwards".