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42 Cards in this Set
- Front
- Back
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central angle
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Angle whose vertex is in the MIDDLE of the circle.
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inscribed angle
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Angle whose vertex is on the CIRCLE itself.
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How do you find the measure of an inscribed angle?
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1/2 the measure of its intercepted arc.
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How do you find the arc of an inscribed angle?
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The angle times 2.
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chord
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a line segment joining two distinct points on a circle.
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inscribed angle
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an angle whose vertex is on the circle's edge
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the measure of an inscribed angle is?
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1/2 the measure of its arc
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every angle inscribed in a semicircle is what kind of angle?
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right angle
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chord
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line segment joining two points on a circle
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when two chords intersect, the measure of the angle is?
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1/2 the sum of the measures of the arcs (M<1=1/2 (arc+arc)
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secant
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if a line intersects a circle in two points
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if two secants intersect outside the circle, the measure of the outside angle is?
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1/2 the difference of the arcs (M<1=1/2 (arc- arc)
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tangent
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if a line is perpendicular to a radius
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the angle formed by a tangent and a chord as a measure of?
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1/2 the arc. (M<1=1/2(arc))
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the angle formed by a tangent and secant has a measure of? 1/2 the difference of the arcs.
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1/2 the difference of the arcs (M<1=1/2 (arc-arc)
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Two tangent segments to a circle from the same point have what kind of lengths?
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equal lengths
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circumference
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the distance around a circle
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circumference formula
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C=2(pie)r or (pie)d
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area formula for circle
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A=(pie) x r-squared
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sector
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region bounded by 2 radii (looks like a PIZZA SLICE)
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area of a sector
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A= m divided by 360 x (pie) x r.
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length of an arc
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A= m divided by 260 x 2 x (pie) x r OR m divided by 180 x (pie) x r
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segment of a circle
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area of a sector- area of a triangle
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LA of Prism
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(perimeter x area of base) (height)
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SA of Prism
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LA+ 2 (area base)
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Volume of prism
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(base area) (height)
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LA of pyramid
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1/2( perimeter of base) (slant height)
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SA of pyramid
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1/2 (perimeter of base) (slant height) + (area base)
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V of pyramid
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http://www.flashcardexchange.com/mycards/add/15647021/3 (area of base) (height)
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LA of cylinder
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2 (pie)(radius of base)(height)
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SA of cylinder
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LA + 2(radius of base)
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V of cylinder
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(pie)(r-squared)(height)
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LA of cone
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(pie)(r)(slant height)
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SA of cone
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LA + (area base)
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V of cone
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1/2 (area of base) (height) or 1/3(pie)(r-squared)(height)
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area of circle
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(pie)(r-squared)
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area of rectangle
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(base)(height)
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area of square
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(s-squared)
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area of triangle
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(1/2)(base)(height)
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area of Rhombass
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1/2(d1)(d2)
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area of trapezoid
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1/2 (base 1 + base 2) (height)
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slant height?
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slant height squared= (r-squared) + (h-squared)
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