Warm Up: Pg. 146 On a park map, a picnic area is represented by a rectangle with coordinate (0,0) (0,4) (6,4) and (6,0). The park is going to be renovated.

Slides:

Advertisements

Similar presentations

Unit 5 review. QUESTION 1 A transformation where a geometric figure is reduced or enlarged in the coordinate plane is called a _____________________.

Advertisements

Perimeter and Area of Similar Figures

10-4 Perimeters and Areas of Similar Figures

EXAMPLE 3 Use a ratio of areas Then use Theorem If the area ratio is a 2 : b 2, then the length ratio is a:b. Cooking A large rectangular baking.

Review: Area and Perimeter. Definitions 1. What is a polygon? 2. What does perimeter mean? 3. What does area mean?

Bellwork Find the area of the shapes described: Find the area of the shapes described: 1.Rectangle with sides 4 inches by 7 inches. 2.Square with side.

The distance around the outside of a shape.

Perimeter Is the sum of the lengths of the sides. When solving a perimeter problem, it is helpful to draw and label a figure to model the region.

11.3 Perimeter and Area of Similar Figures. Two rectangles are similar. One has width 4 in. and length 6 in. The other has width of 6 in. and length of.

A cube has a total surface area of 24 cm2

Scale Factor and Dilation

Similar Triangles and Polygons

Measurement Jeopardy CirclesPerimeter Area 3-D Surface Area And Volume $100 $200 $300 $400 $500 $100 $200 $300 $400 $500.

11.3 Warm Up Warm Up Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Perimeter and Area of Similar Figures.

Chapter Review Understand how to use formulas to find area and perimeter DO NOW: A particular rectangle has an area of 36 square feet and a.

Find the Perimeter and Area:

Fractions Decimals,& Percent Capacity, Surface Area, and Volume Expressions, Equations, and Inequalities GeometryDouble Jeopardy

Estimating Measurements 5.1a Estimate the area of irregular shapes, angle measurement, or weight of common objects 5.2a Estimate, make and use direct and.

1.Tim is painting his living room with a new coffee colored Paint. There are 3 walls in the living room that measure 15 ft by 8 ft each and a fourth wall.

Changing Dimensions What’s the effect on Perimeter and Area??

All scale drawings must have a scale written on them. Scales are usually expressed as ratios. Normally for maps and buildings the ratio: Drawing length:

Basic Measurement.

10-1: Area of Parallelograms and Triangles Objectives: To find the area of parallelograms and triangles To find the area of parallelograms and triangles.

AREA Remember: The perimeter of a shape is a measure of distance around the outside. The area of a shape is a measure of the surface/space contained.

Area Area is the amount of surface inside a closed boundary.

Bug Eye Task Task 1Task 2Task 3Task 4 Task 5Task 6Task 7Task 8 NC Level 4 to 7.

PERIMETER AND SOLUTION PROBLEMS ASSIGNMENT. 1. What is the perimeter of the below shape? 10 – 5n 12n+2 15n - 5.

Perimeter Rectangles 15 m 5 m 5 m 15 m Perimeter = 15 m + 5 m + 15 m

Let’s Play Jeopardy! GeometryMeasurementFractionsPatternsRandom

Area & Perimeter An Introduction. AREA The amount of space inside a 2-dimensional object. Measured in square units cm 2, m 2, mm 2 Example: 1 cm 2 cm.

Stretching & Shrinking 7th grade Writing Rules Scale Factors Vocabulary Terms SF and AreaSimilar.

PERIMETER OF IRREGULAR FIGURES 2/26/16. WARM-UP FIND THE PERIMETER OF THE SQUARE 1 ¼ inches 1 ¼ + 1 ¼ + 1 ¼ + 1 ¼ = 5 inches or 4(1 ¼ ) = 5.

7-1C Areas and Perimeters of Similar Polygons What is the relationship between the perimeter ratios of similar figures and their similarity ratio? What.

Area of Regular and irregular polygons Mrs. Korchmaros.

Unit 8 – 6 Dimensional changes

Jeopardy Angles Parallel Lines Interior/ Exterior Angles Transformation Similar Polygons Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400.

A circular bale of hay has a 40 inch diameter. If 1 in = 2.54 cm, what is the area of the bale in square centimeters?

Areas of Similar Triangles

Lesson 91 Warm Up Pg. 474.

LENGTH and PERIMETER.

Chapter 11.3 Notes: Perimeter and Area of Similar Figures

Solving word Problems.

Area of 2-Dimensional Figures

Corresponding Parts of Similar Triangles

C 5 4 A B 6 Z 10 8 X Y 12.

11.3 Volumes of Pyramids and Cones

11.6 Perimeters and Areas of Similar Figures

Whiteboardmaths.com © 2004 All rights reserved

7.7: Perimeters and Areas of Similar Figures

Area – Learning Outcomes

Warm Up Problem Which of the following expressions is equivalent to 6x + 24? A) 3(x + 12) B) 6(x – 4) C) 6(x + 4) D) x(6 + 4)

UNIT 8: 2-D MEASUREMENTS PERIMETER AREA SQUARE RECTANGLE PARALLELOGRAM

Similar Figures TeacherTwins©2015.

Using Similar Figures to Find Missing Lengths

EXAMPLE 3 Use a ratio of areas Cooking

Ratios, Rates and Percents

Ratios, Rates and Percents

Using Similar Figures to Find Missing Lengths

Warm Up Problem Find the area of the trapezoid..

Similar Figures.

Cost of fencing, leveling and cementing

Area and Perimeter Ten quick questions.

Cost of fencing.

Geometry/Trig Name: _________________________

By- Sabrina,Julianna, and Killian

Volume of Prisms, Cross Sections and Scale Factors

11.7 Perimeters and Areas of Similar Figures

Find the perimeter and area of each shape.

Presentation transcript:

Warm Up: Pg. 146 On a park map, a picnic area is represented by a rectangle with coordinate (0,0) (0,4) (6,4) and (6,0). The park is going to be renovated and the picnic area will be half its size. How will this affect the area and perimeter of the picnic area?

Investigate: Pg. 149 Find the perimeter and area of the garden and answer the questions below it.

Complete Dimensional Changes Activity

Do you see a pattern between new perimeter and old perimeter New Perimeter = Old Perimeter * SF Do you see a pattern between new area and old area New Area = Area* SF2

New Perimeter = Old Perimeter * SF A rectangle with a width of 7 units and a length of 12 units is dilated using a scale factor of 3. What is the perimeter of the dilated rectangle? New Perimeter = Old Perimeter * SF

New Perimeter = Old Perimeter * SF A square with side length of 12 is dilated using a scale factor of ½. What is the perimeter of the dilated square? New Perimeter = Old Perimeter * SF

A triangle with side lengths of 8, 12, and 16 is dilated using a scale factor of ¼. What is the perimeter of the dilated triangle?

Find the side length of the dilated square if the scale factor is 1 ½ . Perimeter = 20cm

The following rectangles are similar. Find the length of segment BD? Perimeter=20 cm D C 12 cm G 8cm H

Do you see a pattern between new area and old area New Area = Old Area * SF2

A triangle has a side length of 4 inches and an area of 18 square inches and a larger similar triangle has a corresponding side length of 8 inches. Determine the area of the larger triangle.

A rectangular shaped flower garden has a length of 5 yards and an area of 15 square yards. A neighbor’s flower garden is similar and has a length of 7 yards. What is the area of the neighbor’s flower garden? Round your answer to the nearest whole number.

A rectangle has a side length of 3 feet and an area of 24 square feet A rectangle has a side length of 3 feet and an area of 24 square feet. A larger similar rectangle has a corresponding side length of 9 feet. Determine the area of the larger rectangle.

A regular hexagon has a side length of 2cm and area of 16 square cm A regular hexagon has a side length of 2cm and area of 16 square cm. A similar hexagon has a corresponding side length of 5cm. Find the area of the larger hexagon?