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Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork: Circumference and Area Explain 1: Using simple proportions to find arc lengths and area of sectors Practice: Worksheet Presentations: Closing:

Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

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Page 1: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

1

Geometry: Module 16.2 and 16.3

Bellwork:  Circumference and AreaExplain 1:  Using simple proportions to find arc lengths and area of sectorsPractice:   WorksheetPresentations:Closing:

Page 2: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

2

16.2 and 16.3:Arc LengthandSector Area

Arc Measure:Notation:  mABMeaning:   Measure of Central Angle

m<ACB

Arc Length:Notation:  AB

Meaning:   The distance traveled (along the circumference) traveled between A and B.

C

A

B

mABm<ACB C

A

B

ABClip in B4p. 864

C

A

B

Sector ACB

Sector Area (area of a slice):Notation:  Sector ACB

Meaning:   The distance traveled (along the circumference) traveled between A and B.

Page 3: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

3

16.2 and 16.3:Arc LengthandSector Area

Clip in B4p. 864

Arc Length Formula:

C

A

B

ABr

Arc length is a portion of the _______________

mAB o 360o  = AB

Circumference  (    d)

 

Page 4: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

4

16.2 and 16.3:Arc LengthandSector Area

Clip in B4p. 864

Sector Area Formula:

C

A

B

Sector ACB

Sector area is a portion of the _______________

mAB o 360o  = Circle Area

  (     r2 ) 

Sector ACB

Page 5: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

5

16.2 and 16.3:Arc LengthandSector Area

Clip in B4p. 864

mAB o 360o  = Circle Area

  (     r2 ) 

Sector ACBmAB o 360o  = AB

Circumference  (    d)

 

Example 1)A

B

12

142o 

ABFind

Page 6: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

6

16.2 and 16.3:Arc LengthandSector Area

Clip in B4p. 864

mAB o 360o  = Circle Area

  (     r2 ) 

Sector ACBmAB o 360o  = AB

Circumference  (    d)

 

C

A

BSector ACB

285o 

Find the area of sector ACBExample 2)

Page 7: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

7

16.2 and 16.3:Arc LengthandSector Area

BOOKp. 864

mAB o 360o  = Circle Area

  (     r2 ) 

Sector ACBmAB o 360o  = AB

Circumference  (    d)

 

Page 8: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

8

16.2 and 16.3:Arc LengthandSector Area

BOOKp. 875

mAB o 360o  = Circle Area

  (     r2 ) 

Sector ACBmAB o 360o  = AB

Circumference  (    d)

 

Page 9: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

9

MultiplyingPolynomials

Notebook Paper

Multiplying Polynomials:

Page 10: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

10

MultiplyingPolynomials

Notebook Paper

Multiplying Polynomials:

3 (5x ­ 12) 5x (2x ­ 6)

x2 (5 ­ 6x2)­2x2y (x + 2)

Page 11: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

11

MultiplyingPolynomials

Notebook Paper

Multiplying Polynomials:

2xn4 (­3x2n3 + 12x3 ­ n7)

6d3 (3d4 ­ 2d3 ­ d)

Page 12: Geometry: Module 16.2 and 16.3 Circumference and Areamrsimmonmath.weebly.com/uploads/1/3/1/7/13179319/... · Geometry Lesson 16.2 & 3 and FOIL 1 Geometry: Module 16.2 and 16.3 Bellwork:

Geometry Lesson 16.2 & 3 and FOIL

12

MultiplyingPolynomials

Notebook Paper

Multiplying Polynomials:

(2x + 3) (x + 5)

(x + 7) (5x ­ 6)