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Angles
Lines
Polygons
Vocabulary
Triangles
100
Formed by two rays that meet at an endpoint
What is an Angle?
100
An endless straight path with no endpoints
What is a Line?
100
A Polygon that has three sides
What is a triangle?
100
Two lines that never intersect
What are parallel lines?
100
A triangle in which all sides are the same length
What is an Equilateral Triangle?
200
an angle that measures less than 90 degrees
What is an acute angle?
200
Part of a line that has one endpoint and goes on forever in one direction
What is a Ray?
200
Quadrilateral
What is a polygon with four sides?
200
Two lines that intersect to form right angles
What is a Perpendicular Lines?
200
A triangle in which NO sides are the same length
What is a Scalene Triangle?
300
The endpoint of an angle
What is a vertex?
300
an exact position
What is a point?
300
Polygon with five sides
What is a Pentagon?
300
A Polygon that has four sides and four corners and is closed
What is a Quadrilateral?
300
A triangle in which at least two sides are the same length
What is an Isosceles Triangle?
400
An angle that makes a suare corner?
What is a Right Angle?
400
Part of a line with two endpoints
What is a line segment?
400
A polygon with eight sides?
What is an octagon?
400
a closed shape that is made up of line segments
What is a polygon?
400
A triangle in which one angle is a right angle.
What is a Right Triangle?
500
An angle that measures greater than 90 degrees but less that 180 degrees.
What is an obtuse angle?
500
Two lines that intersect to form right angles
What is Perpendicular Lines?
500
a polygon with ten sides
What is a decagon?
500
A triangle in which one angle is Obtuse.
What is an Obtuse Triangle?
500
A triangle in which all three angles are Acute?
What is an Acute Triangle?