Exploring Properties of Parallelograms

What is the slope of line EF in the parallelogram EFGH?

• 1

• 0.5

• 2

• 2.5

Which property ensures that EF and GH are parallel in a parallelogram?

• Equal lengths

• Congruent diagonals

• Equal slopes

• Perpendicular bisectors

How can you confirm that a shape is a parallelogram?

• If it has four sides

• If opposite sides are parallel

• If all angles are 90 degrees

• If it has two acute angles

What is the measure of angle B when the scissor lift is at its maximum height?

• 117 degrees

• 63 degrees

• 90 degrees

• 180 degrees

What is the result of subtracting the measure of angle A from 180 degrees in a parallelogram?

• Cannot determine

• Angle B

• Angle C

• Angle D

In a rectangle, what is the measure of angle JKN if the vertex angle is 130 degrees?

• 50 degrees

• 65 degrees

• 25 degrees

• 130 degrees

In a rectangle, what is the measure of angle J and K if it is a vertex angle?

• 65 degrees

• 25 degrees

• 50 degrees

• 130 degrees

What is the measure of the base angles in an isosceles triangle if the vertex angle is 130 degrees?

• 65 degrees

• 50 degrees

• 25 degrees

• 75 degrees

What must be true for diagonals in a rectangle?

• They are perpendicular

• They are congruent

• They bisect each other

• They are parallel

What property differentiates a rectangle from a general parallelogram?

• Congruent diagonals

• Parallel opposite sides

• Equal angles

• All sides equal