Prentice Hall Geometry
A circle has circumference C, diameter d from side to side through center, and radius r from center to a side.
c equals , pi d , or . c equals 2 , pi r
eh equals , pi , r squared
Circle
A circle with radius r has arc between points A and B on the circle.
cap length of . modified eh b with frown above , equals . fraction m , modified eh b with frown above , over 360 end fraction . dot 2 pi r
Arc
A circle has radius lines measuring r extending from O to A and B on the circle, with the area between them as a sector.
cap area of sector eh o b equals . fraction m , modified eh b with frown above , over 360 end fraction . dot pi , r squared
Sector of a Circle
A graph of a circle has radius r from center (h, k) to (x, y) on the circle.
open x minus . h , close squared , plus , open y minus . k , close squared , equals , r squared
Equation of Circle
A segment extends between (x subscript 1 baseline, y subscript 1 baseline) and (x subscript 2 baseline, y subscript 2 baseline), with midpoint M between.
table with 2 rows and 1 column , row1 column 1 , d equals . square root of open , x sub 2 , minus , x sub 1 , close squared . plus . open , y sub 2 , minus , y sub 1 , close squared end root , row2 column 1 , m equals open . fraction x sub 1 , plus , x sub 2 , over 2 end fraction . comma . fraction y sub 1 , plus , y sub 2 , over 2 end fraction . close , end table
Distance and Midpoint
A graph has a line falling through (x subscript 1 baseline, y subscript 1 baseline) and (x subscript 2 baseline, y subscript 2 baseline), with vertical difference between the points as rise and horizontal distance as run.
m equals . fraction rise , over run end fraction . equals . fraction y sub 2 , minus , y sub 1 , over x sub 2 , minus , x sub 1 end fraction
Slope
A graph of a rising line passes through the y-axis at y-intercept b. The vertical and horizontal difference between b and another point on the line is the slope, m.
y equals , m x plus b
Slope-Intercept Form of a Linear Equation
A right prism has base perimeter p, base area B, and height h between bases.
cap l . cap a . equals p h
cap s . cap a . equals cap l . cap a . , plus 2 b
v equals b h
Right Prism
A right cylinder has circular base with radius r, diameter d, and area B, with height h between bases.
cap l . cap a . equals 2 pi r h or cap l . cap a . equals pi d h
cap s . cap a . equals . cap l . cap a . plus 2 b
v equals b h or v equals pi , r squared , h
Right Cylinder
A regular pyramid has base perimeter P, base area B, height h from vertex perpendicular to the base, and slant height l along a side from vertex perpendicular to a base edge.
cap l . cap a . equals . 1 half , p script l
cap s . cap a . equals . cap l . cap a . plus b
v equals . 1 third b h
Regular Pyramid
A right cone has circular base with radius r and area B, height h from vertex perpendicular to the center of the base, and slant height l from vertex to the edge of the base.
cap l . cap a . equals pi r script l
cap s . cap a . equals . cap l . cap a . plus b
v equals . 1 third b h or v equals . 1 third , pi , r squared , h
Right Cone
A sphere has radius r.
cap s . cap a . equals 4 pi , r squared
v equals . 4 thirds , pi . r cubed
Sphere

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Table of Contents

Prentice Hall Geometry Chapter 1 Tools of Geometry Chapter 2 Reasoning and Proof Chapter 3 Parallel and Perpendicular Lines Chapter 4 Congruent Triangles Chapter 5 Relationships Within Triangles Chapter 6 Polygons and Quadrilaterals Chapter 7 Similarity Chapter 8 Right Triangles and Trigonometry Chapter 9 Transformations Chapter 10 Area Chapter 11 Surface Area and Volume Chapter 12 Circles Skills Handbook Reference Visual Glossary Selected Answers Index Acknowledgments