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Page 1: Name:! Circles:)a)Geometric)Perspectivemaestrodeyo.weebly.com/uploads/1/7/1/0/17102056/im_ii_mod_7.4_ready_set_go.pdfCircles:)a)Geometric)Perspective)))))7.4) )!! ©"2013"MATHEMATICS"VISION"PROJECT"|"MVP"

Circles:)a)Geometric)Perspective))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))7.4)!

!

©"2013"MATHEMATICS"VISION"PROJECT"|"MVP"In"partnership"with"the"Utah"State"Office"of"Education"""

Licensed!under!the!Creative!Commons!Attribution4NonCommercial4ShareAlike!3.0!Unported!license"

!

!"

!

!!

Ready,'Set,'Go!'!

'

Ready'Topic:!Radius!and!Area!or!Circumference!!Given'the'area'or'circumference'or'radius'find'the'other'two.'!1.!!!

Radius!=! 1!m!Area!=! !

Circumference!=! !!

2.!Radius!=! !Area!=! 9!!ft2!

Circumference!=! !!

3.!Radius!=! !Area!=! !

Circumference!=! 8!!yds!!

4.!R!=! !A!=! 3.14!m2!

C!=! !!

5.!!!!!!R!=! 7!miles!A!=! !C!=! !

!

6.!!!!R!=! !A!=! !C!=! 81!!in2!

!

!

Set'Topic:!Finding!area!and!perimeter!of!regular!polygons.!!For'each'of'the'regular'polygons'find'the'measure'of'the'interior'angle,'the'perimeter'and'the'area.'7.! 8.!

a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!

a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!!

!9.!

10.!A!regular!polygon!with!14!sides.!And!one!side!equal!to!6!inches.!

a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!

!a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!

Name:!

2013!www.flickr.com/photos/jill.kemerer!!

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Page 2: Name:! Circles:)a)Geometric)Perspectivemaestrodeyo.weebly.com/uploads/1/7/1/0/17102056/im_ii_mod_7.4_ready_set_go.pdfCircles:)a)Geometric)Perspective)))))7.4) )!! ©"2013"MATHEMATICS"VISION"PROJECT"|"MVP"

Circles:)a)Geometric)Perspective))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))7.4)!

!

©"2013"MATHEMATICS"VISION"PROJECT"|"MVP"In"partnership"with"the"Utah"State"Office"of"Education"""

Licensed!under!the!Creative!Commons!Attribution4NonCommercial4ShareAlike!3.0!Unported!license"

!

!"

!

!!

11.!A!244gon!with!sides!equal!to!12!meters.! 12.!A!nonagon!with!sides!equal!to!8!yards.!a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!

a.!!Measure!of!one!interior!angle:!!b.!!Perimeter:!!c.!!Area:!

!

Go'Topic:!Find!area!of!a!sector!of!a!circle.!!If#a#circle#is#cut#into#for#equal#pieces#then#the#area#of#one#piece#would#clearly#be#one#forth#of#the#area#of#the#entire#circle.#If#a#circle#is#cut#into#six#equal#pieces#then#the#area#of#one#of#the#pieces#would#be#a#sixth#of#the#total#area#and#so#forth,#for#n#equal#pieces#the#area#of#one#piece#would#be#one#nth#of#the#total#area.#With#this#in#mind#consider#the#area#of#a#sector#that#is#one#degree#in#size.#A#circle#split#into#sectors#that#are#all#one#degree#in#size#would#have#360#sectors.#How#could#you#find#the#area#of#just#one#of#them?##Once#you#have#one#of#them#you#could#multiple#it#by#any#amount#to#find#a#sector#of#any#number#of#degrees.#Use#this#strategy#to#find#the#area#of#the#sector#of#each#circle#on#the#next#page.#Use#the#example#below#to#assist#you.#

The!area!of!the!circle!is!9!!in2!So,!a!sector!of!one!degree!would!have!area!

!!!"#!in

2!

And!so!the!area!of!the!sector!with!a!central!angle!of!80o!

Would!be!(80) !!!"#!!which!simplifies!to!be!2!!in2.!

'Find'the'area'of'the'sector'indicated'with'the'angle'measure.'!13.! 14.!! !!!!!!!!!15.!

!!!!!!!!16.!

! !!!!!!!!Need!Assistance?!Check!out!these!additional!resources:!!http://www.regentsprep.org/regents/math/geometry/GP14/CircleSectors.htm!

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