DRILL What is the slope of the y-axis? What is the slope of the x-axis? What do you know about the x and y axis in reference to each other? (Justify) A classmate claims that having no slope and having a slope of 0 are the same. Is your classmate right? Explain.

6.2 Quadrilaterals

Special Quadrilaterals Parallelogram: Quadrilateral where opposite sides are parallel and congruent. Rhombus: Parallelogram with four congruent sides. Square: Parallelogram with four congruent sides and four right angles.

Special Quadrilaterals Kite: Quadrilateral with two pairs of adjacent sides congruent but no opposite sides congruent. Trapezoid: is a quadrilateral with exactly one pair of parallel sides. Isosceles Trapezoid: is a trapezoid whose non-parallel sides are congruent.

Intro: Properties of Parallelograms Property Parallelogram Rectangle Rhombus Square Trapezoid Kite Opposite sides are parallel Opposite sides are congruent Opposite angles are congruent Diagonals are congruent Diagonals are perpendicular Diagonals bisect each other All angles are right angles. All sides are congruent.

ABCD is a parallelogram Find AD Find angle B

Example

Examples

Examples

Example Proof

Proof Solution

Classwork Pages 93 – 94 #’s 1 – 4, 6 – 8(true/false) #’s 14, 16, 26 Extra Credit # 27 (Show all work)

Homework Worksheet # 2.4