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36 Cards in this Set
 Front
 Back
equilateral triangle

triangle with all three sides equal in length; all angles have the same measure


faces

flat surface on a
3dimensional shape 

pentagon

polygon with 5 sides


flips=reflections

The flipping of a figure over a line so that its image is the mirror image of the original


intersecting lines

lines which meet or cross one another


perimeter

distance around a closed 2dimensional shape


heptagon

polygon with 7 sides


hexagon

polygon with 6 sides


edges

line segments where two faces of a polyhedron meet


right angle

angle measuring 90


cylinder

3dimensional shape with two circular bases that are parallel and congruent and are connected by a curved surface; a can is a cylinder


parallel

never meeting and always the same distance apart


point

an exact location in space; the center of a circle is a point


irregular polygon

polygon with sides of different lengths or angles of different measures


congruent

having exactly same shape and size


obtuse angle

angle measuring greater than 90 and less than 180


perpendicular

meeting at right angles


polygon

a closed, 2dimensional figure that is made up of line segments joined end to end


quadrilateral

polygon that has 4 sides


similar

exactly the same shape but not necessarily the same size


angle

figure that is formed by two rays or two line segments with a common endpoint


acute angle

angle measuring greater than 0 and less than 90


radius/radii

line segment from the center of a circle to any point on the circle; also, the length of such a line segment


cube

a polyhedron with 6 square faces; has 8 vertices and 12 edges


parallelogram

quadrilateral with 2 pairs of paralles sides; opposite sides of a parallelogram are congruent


circumference

the distance around a circle or a sphere; the perimeter of a circle


isosceles triangle

triangle with at least two sides that are the same length; at least two angles have same measures


area

the amount of surface inside a closed boundary; measured in square units


rectangle

parallelgram with 4 right angles


nonagon

polygon with 9 sides


degrees

unit of measure for angles based on dividing a circle into 360 equal parts; also unit of measure for temperature


regular polygon

polygon whose sides are all the same length and whose angles are all equal


cone

a 3dimensional shape that has a circular base, a curved surface, and one vertex which is called the apex.


rectangular prism

a prism whose faces (including bases) are all rectangles


octagon

polygon with 8 sides


cubic units

a unit used in measuring volume, such as cubic centimeters or cubic feet.
