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24 Cards in this Set
- Front
- Back
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Geometry
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Study of the properties and relationships of points, lines, planes, and solids
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Net
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2- dimensional diagram that can be folded to form a 3- dimensional figure
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Undefined term
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Term that is accepted without definition
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Line
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Set of points
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Plane
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Set of points that forms a completely flat surface extending indefinitely in all directions
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Skew lines
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Lines in different planes that don't intersect but are not parallel
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Definition
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Statement of the precise meaning of a term
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Collinear
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Set of points all of which lie on the same straight line
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Non collinear
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Set of 3 or more points that doesn't all lie on the same straight line
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Line segment
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Set of points consisting of 2 points on a line
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Opposite rays
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2 rays of the same line with a common endpoint and no other point in common
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Angle
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Set of points that is the union of 2 rays having the same endpoint
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Adjacent angles
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2 angles in the same in the same plane that have a common vertex and a common side but do not have any interior points in common
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Vertical angles
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2 angles in which the sides of one angle are opposite rays to the sides of the second angle
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Linear pair
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Angles are 2 adjacent angles whose sum is a straight angle
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Polygon
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Closed plane figure, Formed by 3 or more line segments, each side intersects exactly 2 sides one at each endpoint
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Convex
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No line contains a side of the polygon contains a point in the interior of the polygon
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Sum interior angle polygon
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(n-2)x180
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Regular Polygon interior angle
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(n-2)x180/ n
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Exterior angle polygon
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Add all sides=360
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Exterior angle regular polygon
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Number of sides/ 360
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Altitude
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Line segment drawn from any vertex of the triangle, perpendicular to and ending in the line contains the opposite side
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Distance formula
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Radical (x2-x1)2 + (y2-y1)2
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Midpoint formula
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(x1+x2 /2), y1+y2 /2)
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