perimeter & area of parallelograms, trapezoids, rhombi & kites. 9.3.1.2 compose and...

Perimeter & Area of Parallelograms, Trapezoids, Rhombi & Kites.9.3.1.2 Compose and decompose two- and three-dimensional figures; use decomposition to determine the perimeter, area, surface area and volume of various figures

Guiding Question: How does perimeter/area change with different 2-d shapes? Lesson Obj: IWBAT decompose a

2-d shape to find its perimeter and area.

What is the difference between a parallelogram, a trapezoid, a rhombus, and a kite?

Guiding Question: How does perimeter/area change with different 2-d shapes?

A parallelogram looks like someone tried to push over a rectangle. Finding the perimeter is exactly the same.

P = 2l + 2w

The height is no longer the side of the shape. Area is still base x height.

GUIDING QUESTION: HOW DOES PERIMETER/AREA CHANGE WITH DIFFERENT 2-D SHAPES

Trapezoid: 1 pair of parallel sides.

Perimeter: Find the sum of all sides

Area: add the bases(parallel sides),

divide by 2, multiply by height.

Guiding Question: How does perimeter/area change with different 2-d shapesRHOMBUS: 4 EQUAL SIDES, DIAGONALS ARE PERPENDICULAR, DIAGONALS BISECT KITE: 2 SETS OF CONGRUENT SIDES, DIAGONALS ARE

PERPENDICULAR

Guiding Question: How does perimeter/area change with different 2-d shapesHOW CAN WE FIND THE PERIMETER AND AREA OF THIS RHOMBUS? WHAT IS THE AREA OF THIS KITE?

Guiding Question: How does perimeter/area change with different 2-d shapes Calculate the perimeter and area of

this rhombus.

GUIDING QUESTION: HOW DOES PERIMETER/AREA CHANGE WITH DIFFERENT 2-D SHAPES

A baseball diamond is a rhombus

with each side being 90 feet

(between the bases). What is the

perimeter (distance around the

bases) & the area inside of the

diamond?

Guiding Question: How does perimeter/area change with different 2-d shapes? Assignment: Parallelogram/trapezoid WS

Day 2: Trapezoid/Rhombus/Kite WS