Intro. to Chapter 6 Vocab.

Front

Interior Angles Sum

Back

The sum of the degrees in any polygon can be determined by the number of triangles that can be drawn within the polygon.

Front

Sum of Interior Angles Formula

Back

If n represents the number of sides of a polygon, then the sum of the interior angels (S) can be found using the formula : S = 180(n-2)

Front

Interior Angle of a Regular Polygon

Back

A regular polygon is one in which all sides are equal; therefore all angles are equal! To find the measure of an interior angle in a regular polygon use: S/n

( S = sum of interior angles; n = number of sides)

Front

Exterior Angles Sum

Back

Exterior angles are always supplementary to their adjacent interior angle.

Front

Properties of Parallelograms

Back

1. 1. Opposite sides are congruent

2. 2. Opposite sides are parallel

3. 3. Opposite angles are congruent

4. 4. Consecutive angles are supplementary

5. 5. Diagonals bisect each other

Front

Properties of Rectangles

Back

1. 1. Opposite sides are congruent

2. 2. Opposite sides are parallel

3. 3. Opposite angles are congruent

4. 4. Consecutive angles are supplementary

5. 5. Diagonals bisect each other

6. 6. Four Right Angles

7. 7. Diagonals are congruent

Front

Properties of Rhombi

Back

1. 1. Opposite sides are congruent

2. 2. Opposite sides are parallel

3. 3. Opposite angles are congruent

4. 4. Consecutive angles are supplementary

5. 5. Diagonals bisect each other

6. 6. Four congruent sides

7. 7. Diagonals are perpendicular

8. 8. Diagonals bisect opposite angles

Front

Properties of Squares

Back

1. 1. Opposite sides are congruent

2. 2. Opposite sides are parallel

3. 3. Opposite angles are congruent

4. 4. Consecutive angles are supplementary

5. 5. Diagonals bisect each other

6. 6. Four congruent sides

7. 7. Diagonals are perpendicular

8. 8. Diagonals bisect opposite angles

Front

Non-Isosceles Trapezoids Properties

Back

1. 1. Only ONE pair of opposite sides parallel

2. 2. Consecutive angles are supplementary

Front

Isosceles Trapezoid Properties

Back

1. 1. Only ONE pair of opposite sides parallel

2. 2. Consecutive angles are supplementary

3. 3. Non-parallel sides (legs) are congruent

4. 4. Diagonals are congruent

5. 5. Base angles are congruent

6. 6. Opposite angles are supplementary