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dimensions a measurable extent of some kind, such as length, breadth, depth, or height.
scale factor a number which scales, or multiplies, some quantity. In the equation y = Cx, C is the scale factor for x.
plane sections the area created by a plane cutting through a solid.
area The size of a surface; the amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle
surface area The total area of the surface of a three-dimensional object. Example: the surface area of a cube is the area of all 6 faces added together.
volume The amount of 3-dimensional space an object occupies; capacity
circumference the distance around a circle
radius the distance between the center of a circle and any point on the circle
diameter the distance across a circle through its center.
supplementary angles two angles whose measures have a sum of 180 degrees
vertical at right angles to a horizontal plane; in a direction, or having an alignment, such that the top is directly above the bottom; straight up and down
complementary angles two angles whose measures have a sum of 90 degrees
pyramid a solid formed by polygons that has one base. The based can be any polygon and the other polygons are triangles.
face of a solid a polygon that is a side of a solid
base side of a polygon or a face of a polyhedron, particularly one oriented perpendicular to the direction in which height is measured, or on what is considered to be the "bottom" of the figure.
right rectangular prism A prism in which the angles between the base and sides are right angles.
right rectangular pyramids A pyramid having rectangular base
parallel lines two lines in the same plane that do not intersect.
perpendicular lines lines that intersect at right angles
scalene triangle a triangle with no congruent sides
obtuse triangle a triangle with one angle whose measure is between 90 degrees and 180 degrees
equilateral triangle a triangle with three congruent sides
adjacent angles angles that have a common vertex and a common side. The vertex of an angle is the endpoint of the rays that form the sides of the angle.
inscribed The word is derived from the Latin "scribere" - to write or draw. It means to draw something inside something else. In geometry it usually means drawing one shape inside another so that it just touches.
Created by: artisteacher