Parallelogram Basics
This is the number of parallel sides in a parallelogram.
What is two pairs?
If one angle of a parallelogram is 70°, this is the measure of the angle next to it.
What is 110°?
In a parallelogram, diagonals do this to each other.
What is bisect?
Opposite sides measure (3x + 5) and 20. Solve for x
What is x = 5?
This property states that opposite sides are the same length.
What is congruent?
If one side of a parallelogram is 12 cm, the opposite side must be this length.
What is 12 cm?
True or false: Diagonals are always perpendicular in a parallelogram.
What is false?
Opposite angles measure (5x – 10)° and 2x°. Solve for x.
What is x = 10?
The sum of the interior angles of any quadrilateral.
What is 360°?
If ∠A = 85°, then ∠C equals this.
What is 85°?
If one diagonal is cut into lengths 5 cm and 5 cm, the whole diagonal is this long.
What is 10 cm?
Adjacent angles measure (3x + 15)° and (5x – 5)°. Solve for x.
What is x = 20?
These angles in a parallelogram are equal.
What are opposite angles?
If ∠B = 120°, ∠A must be this measure.
What is 60°?
If diagonal AC is 18 cm, each bisected part is this long.
What is 9 cm?
If diagonals bisect into 4 cm & (x – 2) cm, solve for x.
What is x = 6?
These angles add up to 180° in a parallelogram.
What are consecutive (adjacent) angles?
A parallelogram has angles 4x° and (2x + 60)°. Solve for x.
What is x = 30°?
Diagonals create this many congruent triangles inside a parallelogram.
What is 4?
Sides are 2x + 4 and x + 14. Solve for x.
What is x = 10?