Mathematics 9_ST

How do you describe any two opposite angles in a parallelogram?

• They are congruent.

• They are supplementary.

• They are complementary.

• All of the above.

What can you say about two consecutive angles in a parallelogram?

• They are always congruent.

• They are always supplementary.

• They are sometimes complementary.

• They are never congruent.

Which of the following conditions is not sufficient to prove that a quadrilateral is a parallelogram?

• Two pairs of sides are parallel.

• Two pairs of opposite sides are congruent.

• Two angles are supplementary.

• Two diagonals bisect each other.

How do you describe any two opposite angles in a parallelogram?

• They are always congruent.

• They are supplementary

• They are complementary.

• They are both right angles.

What can you say about any two consecutive angles in a parallelogram?

• They are always congruent.

• They are always supplementary.

• They are sometimes complementary.

• They are both right angles.

Which of the following statements is true?

• Every square is a rectangle.

• Every rectangle is a square.

• Every rhombus is a rectangle.

• Every parallelogram is a rhombus.

Which of the following statements could be false?

• The diagonals of a rectangle are congruent.

• The diagonals of an isosceles trapezoid are congruent.

• The diagonals of a square are perpendicular and bisect each other.

• The diagonals of a rhombus are congruent and perpendicular to each other.

Which of the following quadrilaterals has diagonals that do not bisect each other?

• square

• rhombus

• rectangle

• trapezoid

Which of the following conditions is not sufficient to prove that a quadrilateral is a parallelogram?

• Two pairs of sides are parallel.

• Two pairs of opposite sides are congruent.

• Two angles are supplementary.

• Two diagonals bisect each other.

What is the measure of ∠2 in rhombus HOME?

• 75°

• 90°

• 105°

• 180°