Area of basic shapes

Presentation

•

Mathematics

•

6th - 8th Grade

•

Medium

•

CCSS

6.G.A.1, 3.MD.C.7B, 7.G.B.4

Standards-aligned

Aimee Norman

Used 6+ times

FREE Resource

15 Slides • 7 Questions

Review of skills from the past.

AREA of a basic shape

The amount of surface space a flat object occupies

Defined as

Area

REMEMBER

Base and height will always make a 90* (right) angel

Defined as: set of points all equal distance from a center point

Circle

Multiple Choice

what is the formula for finding area of a circle

C = π r²

A = π r²

A = π r²/ 2

C = 2 π r

Defined as:

all 4 sides are the same size
AND
all 4 angles each equal 90*

Squares

Multiple Choice

Susan wants to fertilize her square garden that has a side measure of 8 ft. What is the area of the garden that she wants to fertilize?

8 sq. ft.

21 sq. ft.

64 sq. ft.

44 sq. ft

Defined as opposites are equal size and paralell

All angles equal 90*

Rectangles

Multiple Choice

Mrs. Davis wanted to cover the classroom with new carpet. If the length of the classroom was 12 feet and the width was 8 feet. How much carpet would she need to buy?

20 feet

40 ft

96 square feet

40 square feet

Defined as 4 sided "rectangular" figure with opposite sides are congruent and parallel

Parallelogram

Multiple Choice

What would you do to find the Area of this Parallelogram?

Multiply 10 in. times 9 in.

Multiply 15 in. times 10 in.

Multiply 15 in. times 9 in.

A shape with 3 sides and 3 angles

The SUM of the measure of the angles is 180*

Triangle

Multiple Choice

We know we can use ANY triangle side as the base, so long as we have a height marked perpendicular (at a right angle) to it.

Which side would be the best to use as the base of the triangle, because it's connected to the height by a right angle?

18 cm

14 cm

8 cm

6 cm

Multiple Choice

Which expression below will find the Area of this triangle?

$\frac{\left(6\ \times8\right)}{2}$

$\frac{\left(6\ \times10\right)}{2}$

$\frac{\left(8\times14\right)}{2}$

$\frac{\left(6\ \times14\right)}{2}$

4 sided shape with exactly one pair of parallel sides

Parallel side are the bases

Trapezoid

Multiple Choice

What is the height of this trapezoid

7 ft

11 ft

6 ft

15 ft

Review of skills from the past.

AREA of a basic shape

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