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27 Cards in this Set
- Front
- Back
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equilateral triangle |
a triangle with three sides of equal length |
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construction |
a geometric figure creasted using only a straightedge and a compass |
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perpendicular lines |
lines that form a right angle with each other |
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Inductive reasoning |
drawing conclusions from specific examples |
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deductive reasoning |
using logic to draw conclusions from statements already accepted as true |
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point |
denotes a location, has no physical extent |
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line segment |
part of a line bounded by two endpoints |
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plane |
boundless flat surface with no edges |
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collinear points |
points all contained within the same line |
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noncollinear points |
points not all contained within the same line |
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coplanar points |
points all contained within the same plane |
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concurrent lines |
lines that contain the same point |
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ray |
part of a line that extends endlessly in one direction |
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angle |
pair or rays that have the same endpoint |
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polygon |
two dimensional figure, lying in a plane, bounded by line segments |
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polyhedron |
three dimensional figure made up of polygons |
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hexagon |
six sided polygon |
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pentagon |
five sided polygon |
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triangle |
a three sided polygon |
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octagon |
eight sided polygon |
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quadrilateral |
four sided polygon |
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perimeter |
sum of the length of the sides of a figure |
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area |
the surface included within a set of lines, specifically: the number of unit squares equal in measure to the surface |
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straightedge |
a tool used for drawing straight lines |
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compass |
a tool used to draw circles and arcs (parts of circles) |
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circle |
the set of all points in a plane that are a fixed distance from a given point in a plane: the circle's center |
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radius |
the fixed distance all points of a circle are from a point in a plane, the circle's center |
