# Shared Flashcard Set

## Details

Term 3 - Geometry
formulas from Chapter 10 to Chapter 12
44
Mathematics
05/30/2010

Term
 What are the sides of a 45-45-90 triangle?
Definition
 x-x-x√2
Term
 What are the sides of a 30-60-90 triangle?
Definition
 x-x√3-2x
Term
 What is the formula for the area of a circle?
Definition
 pi r2
Term
 What is the formula for the circumference of a circle?
Definition
 2 pi r
Term
 What is a chord?
Definition
 a segment that connects two points on a circumference
Term
 What is the diameter?
Definition
 A chord that runs through the center of the circle
Term
 What is a common chord?
Definition
 a chord that is shared between two circles
Term
 What does the central angle equal?
Definition
 the arc measure
Term
 What is the formula for arc length?
Definition
 central angle/360(2 pi r)
Term
 What is a secant line?
Definition
 a segment that contains a chord
Term
 What is a tangent line?
Definition
 a line which touches only one point on a circle
Term
 What is a chord-chord angle?
Definition
 an angle which is somewhere random in the circle
Term
 What is the formula for a chord-chord angle?
Definition
 1/2 (arcA + arcB)
Term
 What is an inscribed angle?
Definition
 an angle that is somewhere on the circumference
Term
 What is the formula for an inscribed angle?
Definition
 1/2 arc
Term
 What is a circumscribed angle?
Definition
 an angle that is outside of the circle
Term
 What is the formula for a circumscribed angle?
Definition
 1/2 (arcA - arcB)
Term
 What is the chord-chord power theorem?
Definition
 if two chords intersect in the interior of a circle, the product of the segments of one chord is equal to the product of the segments of the other chord
Term
 What is the formula for the chord-chord power theorem?
Definition
 a*b = c*d
Term
 What is the secant-secant power theorem?
Definition
 When two secant lines meet to form an angle
Term
 What is the formula of the secant-secant power theorem?
Definition
 exterior*whole = exterior*whole
Term
 What is the secant-tangent power theorem?
Definition
 When one secant and one tangent line meet to form an angle
Term
 What is the formula for the secant-tangent power theorem?
Definition
 exterior*whole = tangent2
Term
 What is the formula for the area of a triangle?
Definition
 1/2 b*h
Term
 What is the formula for the area of a parallelogram?
Definition
 b*h
Term
 What is the formula for the area of an equilateral triangle?
Definition
 s2√3/4
Term
 What is the formula for the median of a trapezoid?
Definition
 1/2(b1+b2)
Term
 What is the formula for the area of a trapezoid?
Definition
 1/2(b1+b2)h
Term
 What is the formula for the area of a kite without using diagonals?
Definition
 1/2b(h1+h2)
Term
 What is the formula for the area of a kite with diagonals?
Definition
 1/2(d1)(d2)
Term
 What is the area of a polygon?
Definition
 1/2ap
Term
 What is the lateral area of a prism or pyramid?
Definition
 p*h
Term
 What is the formula for the total area of a prism?
Definition
 LA + 2B
Term
 What is the formula for the total area of a pyramid?
Definition
 LA + B
Term
 What is the formula for the lateral area of a cylinder?
Definition
 Ch
Term
 What is the formula of the total area of a cylinder?
Definition
 LA + B
Term
 What is the formula for the lateral area of a cone?
Definition
 1/2Cl
Term
 What is the formula for the total area of a cone?
Definition
 LA + B
Term
 What is the formula of the total area of a sphere?
Definition
 4 pi r2
Term
 What is the formula of a rectangular box?
Definition
 l*w*h B*h
Term
 What is the formula for the volume a cylinder?
Definition
 Bh
Term
 What is the formula for the volume of a pyramid?
Definition
 1/3Bh
Term
 What is the formula for the volume of a cone?
Definition
 1/3 Bh
Term
 What is the formula for the volume of a sphere?
Definition
 4/3 pi r3
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