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38 Cards in this Set
- Front
- Back
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area
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the number of square units in a polygonal region needed to cover its surface
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central angle
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an angle whose vertex is the center of the circle
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chord
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a segment whose endpoints are points on the circle
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circle
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the set of all points in a plane that are equidistant from a given point
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circumference
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the distance around a circle
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concentric circles
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circles that have a common center
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cone
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a solid with a circular base and a vertex that is not in the same plane as the base
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cosine
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a trigonometric ratio. adj/hyp
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cylinder
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a solid with congruent circular bases that lie in parallel planes
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diameter
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a chord that passes through the center of the line
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geometric mean
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for two positive numbers a and b the positive number x that a/x=x/b
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inscribed angle
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an angle whose vertex is on the circle and whose sides contain chords of the circle
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inscribed polygon
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a polygon whose vertices all lie on the circle
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kite
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a quadrilateral that has two pairs of consecutive congruent sides, but in which opposite sides are not congruent
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major arc
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the part of a circle that measures between 180* and 360*
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minor arc
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the part of a circle that measures less than 180*`
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parallelogram
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a quadrilateral with both pairs of opposite sides parallel
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polygon
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a plane figure that meets the following two conditions
1.it is formed by three or more segments called sides, such that no two sides with a common endpoint are colinear 2.each side intersects exactly tow other sides,one at each endpoint |
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polyhedron
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a side that is bounded by polygons, called faces that enclose a single region of space
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prism
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a polyhedron with two congruent faces called bases that lie in parallel planes
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proportion
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an equation that equates two ratios
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pyramid
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a polyhedron in which the base is a polygon and the lateral faces are triangles with a common vertex
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radius
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the distance from the center of a circle to a point on the circle
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ratio
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the quotient a/b if a and b are two quantities that are measured in the same units
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rectangle
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a parallelogram with four right angles
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regular polygon
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a polygon that is equilateral and equilangular
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rhombus
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a parallelogram with four congruent sides
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right cylinder
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a cylinder such that the segment joining the centers of the bases are perpendicular to the bases
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secant
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a line that intersects the circle at two points
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sector of a circle
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the region bounded by two radii of a circle and their intercepted arc
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semicircle
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an arc whose endpoints of a diameter of the circle
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sine
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a trigonometric ratio. opp/hyp
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sphere
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the locus of points in a space that are a given distance from a point
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square
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a parallelogram with four congruent sides and four right angles
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tangent
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a trigonometric ratio. opp/adj
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tangent line
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a line that intersects a circle in exactly one point
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trapezoid
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a quadrilateral with exactly one pair of parallel sides
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vector
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a quantity that has both direction and magnitude
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