Types of Angles
Points, Line, and Rays
Line Relationships
Polygons
Quadrilaterals
100
An angle that is 180 degrees exactly.
What is an straight angle?
100
is pictured by a dot and is named with a capital letter.
What is a point?
100
lines that NEVER touch. They keep the same distance apart.
What are parallel lines?
100
A two-dimensional closed figure with three sides.
What is a triangle?
100
A figure with all sides are the same length. There are four right angles.
What is a square?
200
an angle that is less than 90 degrees
What is an acute angle?
200
a straight path between 2 points
What is a line segment?
200
Lines that touch or cross each other.
What are intersecting lines?
200
a closed two-dimensional (flat) shape with straight sides.
What is a polygon?
200
A figure with opposite sides are parallel and the same length. There are four right angles.
What is a rectangle?
300
An angle that is 90 degrees exactly
What is a right angle?
300
a straight path that goes on forever in both directions.
What is a line?
300
Lines that touch or cross and create RIGHT ANGLES.
What are perpendicular lines?
300
A two-dimensional closed figure with five sides.
What is a pentagon?
300
A figure with two pairs of parallel sides. All sides are the same length. Two opposite acute angles. Two opposite obtuse angles.
What is a rhombus?
400
An angle that is greater than 90 degrees but is less than 180 degrees.
What is an obtuse angle?
400
a straight path that goes on forever in one direction
What is a ray?
400
A line that runs straight across. (like the horizon)
What is a horizontal line?
400
A two-dimensional closed figure with eight sides.
What is octagon?
400
A figure with two pairs of opposite parallel sides. Two opposite acute angles. Two opposite obtuse angles.
What is a parallelogram?
500
An angle that measures greater than 180 degrees.
What is a reflex angle?
500
Two rays or line segments that share an endpoint. May be measured with a protractor.
What is an angle?
500
a line that runs straight up and down.
What is a vertical line?
500
A two-dimensional closed figure with six sides.
What is hexagon?
500
A figure with only one pair of parallel sides.
What is a trapezoid?
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