Properties of Quadrilaterals (15-2 through 15-4)

Properties of a Trapezoid

1. One pair of parallel sides (base and top)

2. Angles next to each other sum up to 180°

3.If a Trapezoid Is Isosceles, Then Its Diagonals Are Congruent

Properties of a parallelogram

1. Opposite sides are equal and parallel

2. Opposite angles are equal

3. Consecutive angles are supplementary

4. Diagonals bisect each other

Properties of a Rectangle

1. All angles are 90 degrees

2. Opposite sides are congruent

3. Diagonals of rectangles are congruent

4. Opposite sides are parallel

5. Diagonals bisect each other

Properties of a Rhombus

1. Opposite Sides are parallel

2. Opposite Sides are congruent

3. Opposite Angles are congruent

4. Consecutive Angles are supplementary

5. Diagonals bisect each other

6. All Sides are congruent

7. Diagonals are perpendicular

8. Diagonals bisect angles

9. Diagonals divide rhombus into equal triangles

Properties of a Square

1. Opposite Sides are Parallel

2. All Sides are Congruent

3. All Angles are Congruent

4. Diagonals Bisect Each Other

5. Diagonals are Perpendicular

6. Diagonals Bisect Opposite Angles

7. 4 Right Angles

8. Congruent Diagonals

9. Diagonals divide square into two equal triangles