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Lines
Classify Angles
Angle Pairs
Polygons
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100
Lines that never touch
What are parallel lines?
100
An angle whose measure is less than 90 degrees.
What is an acute angle?
100
these angles share a common vertex and are equal.
What are vertical angles?
100
a 3 sided closed figure
What is a triangle?
100

Figures that have the same shape and size

What is congruent?

200
lines that cross.
What are intersecting lines?
200
an angle whose measure is greater than 90 degrees
What is an obtuse angle?
200
when 2 parallel lines are cut by a transveral, these angles are in the same relative location and they are equal
What are corresponding angles?
200
a 7 sided closed figure
What is a heptagon?
200

Figures that are the same shape

What is similar?

300
Lines that intersect to form right angles.
What are perpendicular lines?
300
an angle whose measure is equal to 180 degrees
What is a straight angle?
300
when 2 parallel lines are cut by a transveral, these angles are outside the parallel lines and on opposite sides of the transversal and they are equal
What are alternative exterior angles?
300
a 6 sided closed figure
What is a hexagon?
300

The longest side of a right triangle

What is the hypotenuse?

400
A lines that intersects two other lines.
What is a transversal?
400
A tool used to measure the degree of an angle
What is a protractor?
400
two angles whose sum of their measures equals 180 degrees
What are supplementary angles?
400
a five sided closed figure
What is a pentagon
400

The sum of the interior angles of a triangle

What is 180 degrees?

500
A straight line which links two points without extending beyond them
What is a line segment?
500
an angle whose measure is equal to 90 degrees
What is a right angle?
500
when 2 parallel lines are cut by a transveral, these angles are inside the parallel lines and on opposite sides of the transversal and they are equal
What are alternate interior angles?
500
a nine sided closed figure
What is a nonagon
500

The sum of the interior angles of a trapezoid

What is 360 degrees?