39 terms

# Chapter 6 Geomentry

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Angle
Formed by two rays that have the same endpoint
Vertex
Where two endpoints meet
Interior
Inside of an angle
Exterior
Outside of an angle
Acute Angle
Less than 90 degrees
Obtuse Angle
More than 90 degrees
Right Angle
Exactly 90 degrees
Straight angle
Exactly 180 degrees
Center
Middle of circle
Diameter
Connects from one side to another
Connects from one side to the center
Chord
Any line segment that connects to two point
Central Angle
An Angle whose vertex is in the center
Polygon
A closed plain figure
Regular Polygon
A polygon with equal sides in length
Triangle
A polygon with three sides
Eqaulateral Triangle
A triangle with all sides the same length
Isosoeles Triangle
A triangle with only two sides the same length
Scalene Triangle
of a triangle having three sides of different lengths
Right Triangle
A triangle with one right angle
Acute Triangle
A triangle that has three acute angles
Obtuse Triangle
A triangle with one obtuse angle
a four-sided polygon
Pentagon
A five-sided polygon
Hexagon
A six-sided polygon
Octagon
An eight-sided polygon
Parallelogram
A quadrilateral whose opposite sides are both parallel and equal in length
Rectangle
A quadrilateral with four right angles
Square
A rectangle with all sides the same length
Rhombus
A parallelogram with all sides same length
Trapazoid
Quadrilateral with one pair of opposite sides parallel
Similar Figures
Figures that have the same shape but not necessarily the same size
Congruent Figures
Figures that have the same size and shape
Point
An exact spot on a line or dot
Line
A straight mark that never ends
Ray
A straight line extending from a point
Perpendicular Lines
Lines that intersect to form right angles
Intersecting Lines
Lines that meet but don't form right angles
Parallel
Two lines that will never intersect