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# Geometry - BBMS 2012

### Twenty-four geometry terms

line a straight path goes on and on in both directions
line segment Two endpoints and a straight path that lies between them
ray A part of a line that goes on and on in one direction
point A location in space named by an ordered pair
plane A flat surface that extends on and on in all directions
vertices Vertex is the point where two rays intersect to form an angle. Vertices are more than one vertex.
parallel Two lines that always remain the same distance apart, they will never cross.
perpendicular Two lines that intersect forming right angles
intersecting Two lines that cross at a point
diagonal A segment that connects two non-adjacent points on a figure.
angle The shape formed when two rays intersect.
acute angle an angle that measures less than 90 degrees
obtuse angle an angle that measures between 91 and 179 degrees.
straight angle an angle that measures 180 degrees
right angle an angle that measures 90 degrees
angle bisector a ray that divides an angle into two equal sides
complementary angles two angles together that equal 90 degrees
supplementary angles two angles together that equal 180 degrees
equilateral triangle a triangle that has three equal sides and they all equal 60 degrees
scalene triangle a triangle that has no equal sides
isosceles triangle a triangle that has two equal sides and two angles
right triangle a triangle that has a right angle (90 degrees)
acute triangle a triangle that has angles that are less than 90 degrees
obtuse triangle a triangle that has an angle that is more than 90 degrees
Created by: wrenndy1