What is the meaning of the term diagonal

what is the formula of th interior angles of regular polygons

Fill in blank- if a convex polygon has n sides and s is the sum of the measure of the_______angles

Fill in blank- if a polygon is convex then the sum of the measures of the exterior angles, one at each vertex is ____

A quadrilateral with opposite sides is called a ________

8.4 proof parallelelogram ABCD

8.7- the diagnols of a parallelogram _____ each other

8.9- if both pairs of opposite side of a quadrilateral are congruent, then the quadrilateral is a _________

A ______ is a quadrilateral with four right angles

A_______ is a quadrilateral with four sides congruent