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104 Perimeters and Areas of Similar Figures 2011 1 March 08, 2011 Apr 27:37 AM 104 Perimeters and Areas of Similar Figures Objective: Find the perimeters and areas of similar figures.

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Page 1: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:37 AM

10­4 Perimeters and Areas of Similar Figures

Objective:  Find the perimeters and areas of similar figures.

Page 2: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:44 AM

Page 3: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:51 AM

With a partner, complete the Hands­On Activity.

Page 4: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:53 AM

Page 5: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:54 AM

The trapezoids at the right are similar.

a)  Find the ratio of the perimeters.

b)  Find the ratio of the areas.

Page 6: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:58 AM

Two similar polygons have corresponding sides in the ratio 5:7.

a)  Find the ratio of their perimeters.

b)  Find the ratios of their areas.

Page 7: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­7:55 AM

The area of the smaller regular pentagon is about 27.5 square cm.  What is the area of the larger 

regular pentagon?

Page 8: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­8:01 AM

The corresponding sides of two similar parallelograms are in the ration 3/4.  The area of the larger parallelogram is 96 square inches.  Find the area of the smaller parallelogram.

Page 9: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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March 08, 2011

Apr 2­8:03 AM

The areas of two similar triangles are 50 square cm and 98 square cm.  What is the similarity ratio?

Page 10: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

10­4 Perimeters and Areas of Similar Figures 2011

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Page 11: 10-4 Perimeters and Areas of Similar Figures 2011...104 Perimeters and Areas of Similar Figures 2011 6 March 08, 2011 Apr 27:58 AM Two similar polygons have corresponding sides in

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