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60 Cards in this Set
- Front
- Back
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Point
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No definition
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Line
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No definition
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Plane
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no definition
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Collinear points
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Points that lie on the same line
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Coplanar points
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Points that lie on the same plane
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Space
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set of all possible points
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Line segment
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A set of two points and all the collinear points between them
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Ray
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Part of a line consisting of a single point and all points on that line that lie on the same side of the original point
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Angle
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the union of two non collinear rays with a common end point
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Right angle
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An angle whose measure is 90 degrees
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Acute angle
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and angle whose measure is less than 90 degrees but more than 0
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Obtuse angle
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an angle whose measure is more than 90 degrees and less 180
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Midpoint of a segment
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A point that divides a segment into two equal parts
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angle bisector
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a line or ray that divides an angle into two equal parts
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parallel lines
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two or more lines that are coplanar and do not intersect
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Skew lines
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non coplanar lines
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Parallel segments
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two segments are parallel if the lines that contain them are parallel
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Parallel rays
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Two rays are parallel if the lines that contain them are parallel
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Perpendicular lines
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Lines that intersect to form a right angle
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A pair of complementary angles
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two angles whose sum is 90 degrees
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a pair of supplementary angles
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two angles whose sum is 180 degrees
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Vertical angles
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two adjacent angles formed by to intersecting lines
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Linear pair of angles
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two adjacent angles whose non common sides form a striaght line
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Polygon
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a closed geometric figure in a plane, formed by connecting line segments endpoint to endpoint with each segment intersecting exactly two others
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concave polygon
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one in which there is a line that contains on of the sides but passes through the interior
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convex polygon
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one that is not concave
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Triangle
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a 3 sided polygon
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quadrilateral
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a 4 sided polygon
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pentagon
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a 5 sided polygon
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hexagon
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a 6 sided polygon
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heptegon
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a 7 sided polygon
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octagon
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an 8 sided polygon
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nonagon
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a 9 sided polygon
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decagon
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a 10 sided polygon
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undecagon
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an 11 sided polygon
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dodecagon
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a 12 sided polygon
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icosagram
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a 20 sided polygon
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Consecutive verices of a polygon
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two vertices that are endpoints of the same side
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consective sides of a polygon
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two lines that intersect at the same vertex
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consecutive angles
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two angles whose veritices are the endpoints of a side
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adjacent angles
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two angles with a common side and a common vertex
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Diagonals of a polygon
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a line segment connecting two non consecutive vertices
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Equilateral polygon
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a polygon whose sides are all congruent
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Equiangular polygon
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a polygon whose angles are all congruent
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Regular polygon
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A polygon that is equilateral and eqiangular
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Right triangle
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a triangle that has exactly one right angle
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acute triangle
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a triangle where all angles are acute
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obtuse triangle
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a triangle where exactly one angle is obtuse
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scalene triangle
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a triangle with no congruent sides
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Isosceles triangle
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a triangle with at least two equal sides
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median of a triangle
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a line segment with one endpoint at a vertex and the other endpoint at the midpoint of the opposite side
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Altitude of a triangle
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A line segment from a vertex that is perpendicular to the line containing the opposite side
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trapezoid
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a quadrilateral with e xactly one set of parallel sides
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Isosceles trapezoid
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A trapezoid with congruent legs
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Kite
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A quadrilateral with two distinct sets of consecutive congruent sides
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right kite
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A kite whose non vertex angles are right angles
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parallelogram
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a quadrilateral with two sets of parallel sides
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Rhombus
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An equilateral quadrilateral
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Rectangle
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an equiangular quadrilateral
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Square
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a regular quadrilateral
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