Geometry
what is the first statement you can use to prove a quadrilateral is a parallelogram?
both pairs of opposite sides are congruent
what is the second statement you can use to prove a quadrilateral is a parallelogram?
both pairs of opposite sides are parallel
what is the third statement you can use to prove a quadrilateral is a parallelogram?
both pairs of opposite angles are congruent
what is the fourth statement you can use to prove a quadrilateral is a parallelogram?
the diagonals bisect eachother
what is the fifth statement you can use to prove a quadrilateral is a parallelogram?
one pair of opposite sides are congruent and parallel
what is the first statement you can use to prove a parallelogram is a rectangle?
if the diagonals are congruent
what is the second statement you can use to prove a parallelogram is a rectangle?
if one of the angles is 90 degrees
what is the equation to find the interior angle sum of a polygon?
(n-2)*180
what is the sum of exterior angles?
360