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angles that have the same vertex and a common side but no interior points in common adjacent angle
two non-adjacent angles on opposite sides of two lines alternate interior angles
two angles whose measures total 90 degrees complementary angles
two angles whose measures total 180 degrees supplementary angles
non-adjacent angles formed by intersecting lines vertical angles
a flat surface that goes on forever in all directions plane
a figure that cannot be traced with the same starting and stopping points open figure
a figure in a plane that can be traced with the same starting and stopping points closed figure
a closed figure made of line segments that do not cross polygon
a point that is common to two sides of a polygon or an angle vertex
a line segment that connects one vertex to another vertex diagonal
an exact location in space point
a set of points that form a straight path extendending in opposite directions without end line
a part of a line that has one endpoint and continues without end in the other direction ray
a part of a ray or line that has two end points line segment
line segments that have the same length congruent lines
a five sided shape pentagon
a three sided shape triangle
a six sided shape hexagon
a four sided shape quadrilateral
a ten sided shape decagon
lines tht meet or cross each other intersecting
lines that never intersect parallel lines
lines that intersect to form a 90 degree angle perpendicular lines
a trangle that has no congruent sides scalene
a triangle with at least 2 congruent sides isosceles
a triangle with 3 congruent sides equilateral
a triangle with three acute angles acute triangle
a triangle with 1 right angle right triangle
a triangle with 1 obtuse angle obtuse triangle
a quadliteral with both pairs of opposite sides parallel and congruent parallelogram
a parallelogram with 4 congruent sides rhombus
a parallelogram with 4 right angles a rectangle/square
a quadliteral with 4 congruent sides square
a quadliteral that has exactly 1 pair of parallel sides trapezoid
a quadliteral that has 2 pairs of congruent adjacent sides kite
a closed figure having all points the same distance from the center circle
a ine segment that has endpoints on a circle chord
a chord that passes through the center of a circle diameter
a line segment that connects the center of a circle and a point on the circle. Its length is half the diameter radius
two points on a circle and the part of the circle between the two points arc
an angle whose vertex is the center of a circle central angle
a region enclosed by the two radii and an arc joining the endpoints of the radii sector
formula for adding all sides (2L+2W) perimeter
formula to multipy length times width (LxW) area
formula (LxWxH) volume
formula (1/2BH) area of a triangle
formula PiD (pi is 3/14) circumference
have the same shape, but not the same size similar
moves a figure in a straight line without turning or flipping it translation
turns a figure about a point rotation
creates a mirror image of a figure across a line reflection
a picture image
Created by: belles