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Geometry unit 1
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Gravity
Terms in this set (26)
Collinear
Points that lie on the same line
Plane
A set of points that form a flat surface extending in all directions
Coplanar
Points that lie on the same plane
Line segment
Part of a line that consists of two points called endpoints and all the points between them
Congruent segments
segments that have the same length
Midpoint
The point on a line that divides the segment into two congruent segments
Segment bisector
Any line, segments or plane that intersects a segment at the midpoint
Ray
Part of a line consisting of one endpoint and all point to one side of the endpoint
Opposite rays
Two rays with the same endpoint, forms a straight line
Acute angles
Angles that measure less then 90 degrees
obtuse angles
Angles that measure greater then 90 degrees
Right angles
Angles that measure 90 degrees
Straight angles
Angles that measure 180 degrees
angle bisector
A ray which divides an angle into two congruent amgles
Adjacent angles
Two angles that share a vertex
Complimentary angles
Two angles who's sim is 90 degrees
Perpendicular lines
Two lines that form right angles at the point of intersection
Perpendicular bisector
Any line that is perpendicular to the line segment at the midpoint
Parallel lines
Coplanar lines that do not intersect
Scalene triangle
A triangle in which all three sides are different lengths
isosceles triangle
A triangle that has two sides equal in length
equilateral triangle
A triangle that has all three sides equal in length
acute triangle
A triangle that has all three angles measuring less than 90 degrees
obtuse triangle
A triangle that has one angle measuring greater than 90 degrees and less than 180 degrees
right triangle
A triangle that has one right angle
equiangular triangle
A triangle in which all three angles are the same measure
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