Circles
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measure of an arc
an arc's measure (
in degrees)
is he measure of its central angle
minor arc
an arc whose measurement is between 0-180 degrees. Named with 2 letters
Major arc
measurement between 180-360 degrees. Named with 3 letters
semicircle
an arc with 180 degrees. Named with 3 letters
circumference
d x 3.14
length of an arc
m of arc/360 = l of arc/circumference
area of a circle
Pi r^2
area of a sector
m/360 = area of setor/area of circle
concentric circles
circles with the same center
area of base
Pi r^2
lateral area
LA= Ceircumference x height
Surface area
SA= LA + 2B
or diameter x height x pi
volume
basae x height
Card Set Information
Author:
AnnaIsCool
ID:
84021
Filename:
Circles
Updated:
2011-05-05 20:58:16
Tags:
geometry
Folders:
Description:
circles and crap
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