# Shared Flashcard Set

## Details

Geometry Final Formulas
Math formulas that will be needed to know for final.
35
Education
06/12/2011

Term
 Area of a trapezoid
Definition
 A=1/2h(b1+b2)
Term
 Area of a triangle
Definition
 A=1/2bh
Term
 Area of a rectangle & Parallelogram
Definition
 A=bh
Term
 Area of rhombus or kite
Definition
 A=1/2*d1*d2
Term
 Area of regular polygon
Definition
 A=1/2aP
Term
 Area of a circle
Definition
 A=∏r2
Term
 Circumfrence of a circle
Definition
 2∏R
Term
 Lateral Area of Prism
Definition
 L.A=ph
Term
 Surface area of Prism
Definition
 S.A.=L.A. + 2B
Term
 Lateral Area of Cylinder
Definition
 L.A=2∏rh
Term
 Surface Area of Cylinder
Definition
 S.A=L.A. + 2B
Term
 Lateral Area of a Regular Pyramid
Definition
 L.A=1/2pl      (P=perimeter of base ; l=slant height)
Term
 Surface Area of a Regular Pyramid
Definition
 S.A.=L.A+B
Term
 Lateral Area of a Cone
Definition
 L.A.= ∏rl
Term
 Surface Area of a Cone
Definition
 S.A= L.A. + B
Term
 Volume of a Prism
Definition
 V=Bh
Term
 Volume of Cylinder
Definition
 V=∏r2h
Term
 Volume of Pyramid
Definition
 V=1/3Bh
Term
 Volume of a cone
Definition
 V=1/3Bh or V=1/3∏r2h
Term
 Surface Area of a Sphere
Definition
 S.A=4∏r2
Term
 Volume of a Sphere
Definition
 V=4/3∏r3
Term
 Pythagorean Theorem
Definition
 [image]
Term
 450 - 450 - 900 Triangle Theorem
Definition
 Hypotenuse= s times the sqaure root of 2.    Both legs are congruent    [image]
Term
 300-600-900 Triangle Theorem
Definition
 Hypotenuse=2 times shorter leg Long leg= the sqaure root of 3 times shorter leg [image]
Term
 Tanget Ratio
Definition
 Tan= lenght of leg oppostie/Lenght of leg adjacent to    [image]
Term
 When to use inverse of tanget
Definition
 When finding the angle using the inverse of tanget,  which is tan-1
Term
 Sine Ratio
Definition
 Sine= leg opposite/hypotenuse
Term
 Cosine Ratio
Definition
Term
 When to use inverse of cosine and sine
Definition
 Use the inverse of cosine and sine when finding angle measures  Cos-1 Sine-1
Term
 Angle of Depression
Definition
 [image]
Term
 Angle of Elevation
Definition
 [image]
Term
 Isometries
Definition
 [image]
Term
 Dilations
Definition
 [image] Enlargment Blue is orignial, pink if after
Term
 Dilations
Definition
 Reduction    when pre-image is larger than image
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