Geometry Bellwork: Think about: How many squares? 14

Geometry Bellwork: Think about: How many rectangles? 12

Challenge: Connect the 9 dots Use only 4 lines Do not lift your marker Do not trace over a line already drawn

F(-6, 8), I(4, 6), S(6, -4), and H(-4, -2) Test for the characteristics of a rhombus. – If it is a rhombus, its sides are congruent. – Check the lengths of the sides using the distance formula – All 4 sides ARE the same length. FISH is a rhombus. It could be a square. Check to see if it is a rectangle (a square is also a rectangle) – If it is a rectangle, it has 4 right angles. That means the slopes of the sides should be negative reciprocals. – The slopes of the sides are NOT negative reciprocals. – Therefore FISH is NOT a rectangle and, hence, not a square. Bottom line (literally): the shape is a rhombus.

PropertyQuadrilateralParallelogramRectangleRhombusSquare diagonals bisect each other Opposite sides are parallel diagonals are congruent each diagonal bisects a pair of opposite angles consecutive angles are supplementary opposite sides are congruent has 4 right angles Opposite angles are congruent diagonals are perpendicular QUIZ!

° 126° 63° 54° 27°

Objectives: Content Objective: – You will be able to calculate the area of trapezoids and composite shapes. Language Objective: – You will be able to solve area word problems.

Take out your quadrilateral template (the purple pages)

Look at the parallelograms quadrant A = bh

Copy in Notes: Example: Find the area: A = bh A = 11(6.7) A = 73.7

Look at the trapezoids quadrant

Example: 2( ) ( )2 -25

Please draw: 3

On the same paper: 7

Suppose… You want to find the area of the shaded part of the figure below. How would you do it? 7 m 4 m 7 m 4 m 2 m