Chapter Six:  
Quadrilaterals

Geometry   Notes

Chapter  6

Section  6.1
Section  6.2
Section  6.3
Section  6.4
Section  6.5
Section  6.6
Section  6.7

Geometry Contents

Take notes on the following topics.

Base angles of an isosceles trapezoid (p. 322) A trapezoid is a quadrilateral with exactly one pair of parallel sides, the bases. The nonparallel sides are called the legs of the trapezoid. Each pair of angles adjacent to a base are base angles of the trapezoid. An altitude of a trapezoid is a perpendicular segment from one base to the line containing the other base. Its length is called the height of the trapezoid.

Theorem 6-15

The base angles of an isosceles trapezoid are congruent.

Theorem 6-16

The diagonals of an isosceles trapezoid are congruent.

Theorem 6-17

The diagonals of a kite are perpendicular.