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# Math unit 4

### 19-20

TermDefinition
Adjacent Two angles that share a common side and a common vertex, but do not overlap
Angle A shape, formed by two lines or rays diverging from a common point
Base the number of different digits or combination of digits and letters that a system of counting uses to represent numbers
Circumference The distance around the edge of a circle
Complementary when two angles add up to 90°
Diameter any straight line segment that passes through the center of the circle and whose endpoints lie on the circle
Dimensions A measurement of length in one direction
Face each flat surface of any geometric solid
Inscribed drawing one shape inside another so that it just touches
Line a line of points that extends infinitely in two directions
Line Segment a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints
Parallel two lines that are always the same distance apart and never touch
Perpendicular at right angles
Pi (TT) is a number - approximately 3.142. It is the circumference of any circle divided by its diameter
Plane Sections the area created by a plane cutting through a solid
Pyramid a polyhedron formed by connecting a polygonal base and a point
Radius any of the line segments from its center to its perimeter
Ray A portion of a line which starts at a point and goes off in a particular direction to infinity
Right Rectangular Prism a rectangular prism has a rectangle as its base, and vertical sides perpendicular to the base
Right Rectangular Pyramid is a three-dimensional object with a rectangle for a base and a triangular face corresponding to each side of the base
Supplementary when two angles add up to 180 degrees
Vertical a line which runs from up and down the page
Created by: mbell2019
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