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Chapter 11 Vocab

Chapter 11 Vocabulary

QuestionAnswer
base In two dimensions, one side of a triangle or polygon that is used to help find the area. In three dimensions, a plane figure, usually a polygon or circle, by which a three-dimensional figure is measured or named.
congruent Having the same size and the same shape.
equilateral triangle A triangle with three congruent sides.
heptagon A polygon with seven sides and seven angles.
isosceles triangle A triangle with two congruent sides.
lateral face Any surface of a polyhedron other than a base.
nonagon A polygon with nine sides and nine angles.
polygon A closed plane figure formed by three or more line segments.
polyhedron A solid figure with 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 all other faces are triangles that meet at a common vertex.
quadrilateral A polygon with four sides and four angles.
regular polygon A polygon in which all sides are congruent and all angles are congruent.
scalene triangle A triangle with no congruent sides.
unit cube A cube that has length, width, and height of 1 unit.
volume The measure of the space that a solid figure occupies.
angle A shape formed by two rays that share the same endpoint.
vertex The point where two or more rays meet; the point of intersection of two sides of a polygon; the point of intersection of three (or more) edges of a solid figure; the top point of a cone.
Created by: CoachD