Area of Polygons

Presentation

•

Mathematics

•

5th - 7th Grade

•

Medium

•

CCSS

6.G.A.1, 4.G.A.1, 2.G.A.1

Standards-aligned

Megan Hamstad

Used 28+ times

FREE Resource

9 Slides • 13 Questions

Area of Polygons

Before we begin

Wednesday's from 10 to 11 am will be office hours! The link is included on the main schoology page. If you need help with homework, you are confused on anything, or need to chat - please come! My door is always open.

Today we will develop strategies for finding the area of trapezoids and will apply their strategies to find the area of a complex shape.

Open Ended

What is a polygon?

Type response here

Polygon

A polygon is a figure with at least three straight sides and angles, and typically five or more.

Multiple Choice

Which one of these images show perpendicular lines?

Multiple Choice

What angle do perpendicular lines make?

65 degrees

91 degrees

180 degrees

90 degrees

Multiple Choice

How do you find the area of a parallelogram?

base x base

base x height x width

base x height

base x height divided by 2

Multiple Choice

Find the area of this parallelogram (you may have to click on the image to enlarge it)

28 units squared

35 units squared

21 units squared

Multiple Choice

What is the formula for finding the area of a triangle?

base x height divided by 3

base x height divided by 2

base x height

base x height x 2

Multiple Choice

What is the height of this triangle?

Multiple Choice

What is the area of this triangle?

48 units squared

24 units squared

60 units squared

36 units squared

Multiple Choice

What is the area of this triangle?

24 m

70 meters squared

140

140 meters squared

Multiple Select

How do you feel with finding the area of parallelograms and triangles?

Great!

In the middle

NOT GOOD

BREAK TIME

Take a 5 minute break and then we are going to move to area of trapezoids!

Open Ended

What are the characteristics of a trapezoid?

Type response here

Trapezoid

A plane figure (flat)
A closed figure (it has an interior and exterior)
A polygon (straight sides)
A quadrilateral (four straight sides)

Formula for finding the area of a trapezoid

(base 1 + base 2) x height divided by 2

Multiple Choice

What is the area of the trapezoid?

56 units squared

28 units squared

38 units squared

49 units squared

Multiple Choice

What is the area of this trapezoid?

66 units squared

42 units squared

132 units squared

Work time! Go to schoology and complete the homework: Area of a trapezoid

if you are still confused I will be here for questions or clarification. Please ask!

Area of Polygons

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