PROPERTIES
A parallelogram has two pairs of these.
What are parallel sides?
If one angle in a parallelogram is 70°, what is the angle next to it?
What is 110°?
The diagonals of a parallelogram do this to each other.
What is bisect?
A quadrilateral with opposite sides parallel
What is a parallelogram?
Opposite sides are equal:
If one side is 3x = 21, find x
What is x = 7?
Opposite sides in a parallelogram have this property.
What is they are congruent?
If one angle in a parallelogram is 120°, what is the opposite angle?
What is 120°?
In a rectangle, diagonals are congruent. True or False?
True
A parallelogram with four right angles.
What is a rectangle?
Consecutive angles are supplementary:
x + 50 + x = 180
What is x = 65?
Opposite angles in a parallelogram are always ______.
What is congruent?
In a rectangle, each angle measures ______°.
What is 90°?
A parallelogram has how many pairs of opposite congruent sides?
What is 2?
A parallelogram with opposite sides congruent
What is a parallelogram ?
Opposite angles are equal:
4x – 6 = 2x + 20
What is x = 13?
Consecutive angles in a parallelogram have what relationship?
What is supplementary?
If angles are supplementary, their sum is ______.
What is 180°?
In a parallelogram, diagonals create how many congruent triangles?
What is 4?
A parallelogram with diagonals that are congruent
A rectangle
Rectangle diagonals are congruent:
5x + 3 = 4x + 15
What is x = 12?
A quadrilateral is a parallelogram if both pairs of opposite sides are _______.
What is parallel?
In a rectangle, consecutive angles are 90°. What is the sum of all interior angles?
What is 360°?
Which shape always has diagonals that bisect and are congruent?
What is a rectangle?
A quadrilateral has four right angles and diagonals that bisect each other but are not congruent. Can the shape be a rectangle?
No — diagonals must be congruent in a rectangle?
Parallelogram opposite sides:
6x – 8 = 2x + 20
What is x = 7?