Begin2.DVI

APPENDIX B

Background Material

Geometry

Rectangle

Area=(base)(height)=bh

Perimeter= 2b+ 2h

Right Triangle

Area=

1

2 (base)(height)=

1

2 bh

Perimeter=b+h+r

wherer^2 =b^2 +h^2 is the Pythagorean theorem

Triangle with sides a, b, c and angles A, B, C

Area=^1

2

(base)(height)=^1

2

bh=^1

2

b(asinC)

Perimeter=a+b+c

Law of Sines a

sinA

= b

sinB

= c

sinC

Law of Cosines c^2 =a^2 +b^2 − 2 abcosC

Trapezoid

Area=^1

2

(b 1 +b 2 )h

Perimeter=b 1 +b 2 +c 1 +c 2

c 1 =

h

sinθ 1 c^2 =

h

sinθ 2

Circle

Area=πρ^2

Perimeter= 2πρ

Equation x^2 +y^2 =ρ^2