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face a flat surface of a solid figure
hexagon a polygon with six sides and six angles
line of symmetry the center fold of a figure where both sides match equally
octagon a polygon with eight sides
parallel lines lines that never intersect and are always the same distance apart
parallelogram a quadrilateral with both opposite sides parallel and congruent
pentagon a polygon with five sides
area the number of square units needed to cover a surface
circumference the distance around a circle
closed figure a figure that begins and ends at the same point
cone a solid figure that has a circular base and one vertex
congruent having the same size and shape
corresponding angles angles that are in the same position in different plane figures
cylinder a solid figure with two parallel bases that are congruent
edge the line segment where two faces of a solid figure meet
solid figure a three dimensional figure
sphere a solid figure that has the shape of a round ball
square a quadrilateral with four equal sides and four right angles
symmetry when one half of a figure looks like the mirror image of the other half
two dimensional measured in two directions, such as length and width
three dimensional measured in three directions, such as length, width, and heigth
trapezoid a quadrilateral with one pair of parallel sides
triangle a polygon with three sides and three angles
vertex the point at which rays of an angle or line segments meet in a plane figure or in a solid figure
perpendicular lines two lines that intersect to form four right angles
polygon a closed plane figure with straight sides
polyhedron a solid figure with flat faces that are polygons
prism a solid figure that has two congruent, polygon-shaped bases, and other faces that are all rectangles
pyramid a solid figure with a polygon base and triangular sides which meet at a single point
quadrilateral a polygon with four sides
rectangle a parallelogram with four right angles
regular polygon a polygon in which all sides are congruent and all angles are congruent
rhombus a parallelogram with four congruent sides
scale drawing a drawing that shows a real object smaller than or larger than the real object
similar figures figures that have the same shape but may have different sizes
Created by: klookinland