Transparency 11-2
This presentation is the property of its rightful owner.
Sponsored Links
1 / 9

5-Minute Check on Lesson 11-1 PowerPoint PPT Presentation


  • 72 Views
  • Uploaded on
  • Presentation posted in: General

Transparency 11-2. 5-Minute Check on Lesson 11-1. Find the area and the perimeter of each parallelogram. Round to the nearest tenth if necessary. 2. 3. 4.

Download Presentation

5-Minute Check on Lesson 11-1

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


5 minute check on lesson 11 1

Transparency 11-2

5-Minute Check on Lesson 11-1

  • Find the area and the perimeter of each parallelogram. Round to the nearest tenth if necessary.

  • 2.

  • 3. 4.

  • TRY: Find the height and base of this parallelogram if the area is 168 square units

17 ft

11 cm

13 cm

12 ft

45°

11 in

60°

18 in

6.3 m

x + 2

x

Click the mouse button or press the Space Bar to display the answers.


Lesson 11 2 day 1

Lesson 11-2 Day 1

Areas of Triangles


Area of triangles

Area of Triangles

R

Triangle Area

A = ½ * b * h

h is height (altitude)

b is base (┴ to h)

h

T

S

W


Example 1

EXAMPLE 1

R

Find the area of triangle RST

h

45°

S

T

W

10

10


Example 2 1a

Example 2-1a

EXAMPLE 2

Find the area of quadrilateral ABCD if AC = 35, BF = 18, and DE = 10.


Example 2 1b

Example 2-1b

EXAMPLE 3

Find the area of quadrilateral HIJK if IK = 16, HL = 5 and JM = 9


Example 4

EXAMPLE 4

  • Find the area of the triangle whose vertices are (3,6), (7,6) and (3,1).


Example 5

EXAMPLE 5

  • Find the area of the parallelogram whose vertices are (0,0), (4,0), (5,5), and (1,5)


Summary homework

Summary & Homework

Summary:

The formula for the area of a triangle can be used to find the areas of many different figures

Congruent figures have equal areas

Classwork:YOU MUST SHOW WORK!!!!!

pg 605 (5,13, 14, 19, 20, 34, 35)

pg 599 (21-25 and page 605 #7) Plot points first then find the area of each!!!


  • Login