T—06/02/09—HW #76: Pg : 1—10, 12—16; Pg : 1—43 odd

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T—06/02/09—HW #76: Pg 712-713: 1—10, 12—16; Pg 823-824: 1—43 odd 2) A 4) A 6) A 8) E 10) C 12) 32pi, 256pi, 14) 45 16) 4pi

Chapter 11 Review

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Sum of interior angles in polygon Sum of exterior angles in polygon Measure of ONE interior angle of REGULAR polygon Measure of ONE exterior angle of REGULAR polygon

How many sides are there if the sum of one interior angle of a regular polygon is 350 degrees? How many sides are there if the sum of one exterior angle of a regular polygon is 20 degrees? Interior and exterior angles are supplementary.

Area of Equilateral triangle. s 8

10

Side Ratio Perimeter Ratio Area Ratio 1:5 1:5 1:25 4:3 4:3 16:9 3:1 Do you notice a relationship between the side ratio, perimeter ratio, and area ratio? Theorem 11-5 If the scale factor of two similar figures is a:b, then: 1) The ratio of perimeters is a:b 2) The ratio of areas is a2:b2 Find the area and perimeter of a rectangle with dimensions: 4 by 10 28 40 8 by 20 56 160 6 by 15 42 60 20 by 50 140 1000 2 by 5 14 10 Side Ratio Perimeter Ratio Area Ratio 1:5 1:5 1:25 4:3 4:3 16:9 3:1 3:1 9:1

Find the perimeter ratio and the area ratio of the two similar figures given below.

Circumference is the distance around the circle. (Like perimeter) C = πd = 2πr LIKE THE CRUST PIZZA PART Area of a circle: A = πr2

A O x B Like crust

Find the length of the arc 3 O 120o

A O x B Like crust Like the slice

Find the area of the sector. 3 O 120o

T—06/02/09—HW #76: Pg 712-713: 1—10, 12—16; Pg 823-824: 1—43 odd