Lines
Angles
Triangles
Symbols
Miscelaneous
100

This goes on forever in two directions

What is a line

100
This is the term for a 90 degree angle
What is right angle
100
All angles in every triangle will add up to this number of degrees
What is 180 degrees
100

≅

What is congruent

100

Angle pairs formed by two lines crossing

What are vertical angles

200
this has one endpoint and continues in one direction forever
What is a ray
200
An angle that is less than 90 degrees
What is acute
200
A triangle that has all sides the same length
What is equilateral
200

∡

What is an angle symbol

200

Two adjacent angles that sum to 180 degrees

What is a linear pair

300
This is part of a line
What is a line segment
300
an angle that is greater than 90 degrees
What is obtuse
300
A triangle with one angle greater than 90 degrees
What is obtuse triangle
300

∆

What is a triangle symbol

300
A right triangle has one angle that is 45 degrees. What is the measure of the 3rd angle
What is 45 degrees
400
two lines that are the same distance apart and will never touch
What is parallel lines
400
this is the number of degrees in a straight angle
What is 180 degrees
400
A triangle with two sides the same length
What is isosceles
400

 ∥

What is parallel

400

∡A≅∡A

What is the reflexive property

500
lines that intersect to form a right angle
What is perpendicular
500
This is used to measure angles
What is a protractor
500
A triangle with a 90 degree angle and no sides the same length
What is right, scalene
500

⊥

What is perpendicular

500

if a=b 

and b=c 

then a=c

What is the transitive property

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