Quadrilaterals: Key Concepts and Types

Which of the following statements is TRUE about properties of a parallelogram?

What is the condition that defines a parallelogram?

If a quadrilateral has two pairs of opposite sides congruent, is it always a parallelogram?

Which of the following properties is NOT true for all parallelograms?

If two consecutive angles of a quadrilateral are supplementary, can we conclude that it's a parallelogram?

In parallelogram ABCD, angle A is 70 degrees. What's the measure of angle C?

In parallelogram ABCD, diagonal AC is 10 cm long. What's the length of diagonal BD?

If a quadrilateral has two pairs of opposite sides parallel, can we conclude that it is a parallelogram?

Which of the following conditions guarantee that a quadrilateral is a parallelogram?

If RU ≅ BY, what can we conclude about the relationship between RU and BY?

In a parallelogram, what is the relationship between any two consecutive angles?

If a quadrilateral has two adjacent angles that add up to 180 degrees, what can we conclude?

Which of the following is NOT a characteristic of a parallelogram?

If RY bisects BU in a quadrilateral, what can you conclude about the quadrilateral?

If ∠R ≅ ∠Y and ∠B ≅ ∠U in a quadrilateral, what can we conclude?

If a diagonal splits a parallelogram into two matching triangles, what can be said about these triangles?

In rhombus RUBY, what is the measure of ∠RUB?

In parallelogram VORE, what must be true about ∠7 and ∠8 based on Theorem 3?

In rhombus PARK, what is the measure of ∠KPA?

In square ABCD, if AC = y + 8 and DB = 3y - 12, what is the length of BD?

Which statement is TRUE about a quadrilateral with equal opposite sides?

Which statement is TRUE about a quadrilateral with diagonals that bisect each other?

What is the correct term to fill in the blank: "A quadrilateral with equal opposite sides is always a _______________."

What is the correct term to fill in the blank: "A quadrilateral with ___________________ opposite angles is always a parallelogram."

What is the measure of ∠U in parallelogram RUBY, given that ∠R measures 115°?

If a quadrilateral has equal opposite sides, which of the following classifications is always true?

In parallelogram ROAD, RM = 2y - 1 and MA = y + 2. What is the value of y?

If a parallelogram has four right angles, what type of quadrilateral is it?

Given that ∆RYU ≅ ∆YRB, what can we conclude about quadrilateral RUBY?

In a rectangle, are the diagonals always congruent?

In rectangle RUBY, |RB| = 2x + 28 cm and |UY| = 4(5x - 2) cm. What is the value of x?

Which of the following is NOT a sufficient condition for a quadrilateral to be a parallelogram?