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7th Grade Math- Chapter 8- Geometric Relationships
Contains Vocabulary up through section 8-4
Terms in this set (21)
an exact location, shown as a dot
a straight paththat extends forever in opposite directions.
A flat surface with no thickness and extends forever. Can be defined by three points that are not in a straight line.
Part of a line that has one endpoint and extends forever in one direction.
part of a line that extends from one end to another.
An angle that measures exactly 90 degrees
An angle that measures less than 90 degrees
An angle that measures greater than 180 degrees
An angle that looks like a stright line, measures 180 degrees
when two lines intersect and form 90 angles
Two lines that equal distance apart in the same plane and never intersect (run into each other).
Lines that do not intersect but are not in the same plane
are the opposite angles formed when two lines intersect
have a common vertex and a common side and are next to each other.
a line that cuts across a set of lines.
Angle measures that add up to 90 degrees
Angle measures that add up to 180 degrees
connecting two points in a many sided figure to create a triangle
Sum of the Degrees in a Triangle
= 180 degrees
Formula for finding the number of degrees in a many sided shape
180(n-2) = number of degrees
N = number of sides in the figure
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