|in these quadrilaterals, the diagonals are congruent||rectangle, square, isosceles trapezoid|
|in these quadrilaterals, each of the diagonals bisects a pair of opposite angles||rhombus, square|
|in these quadrilaterals, the diagonals are perpendicular||rhombus, square|
|a rhombus is always a||parallelogram|
Accordingly, do consecutive interior angles equal 180?
The consecutive interior angles theorem states that when the two lines are parallel, then the consecutive interior angles are supplementary to each other. Supplementary means that the two angles add up to 180 degrees.
Are consecutive angles of a parallelogram supplementary?
DEFINITION: A parallelogram is a quadrilateral with both pairs of opposite sides parallel. THEOREM: If a quadrilateral has 2 sets of opposite angles congruent, then it is a parallelogram. * THEOREM: If a quadrilateral has consecutive angles which are supplementary, then it is a parallelogram.