lines
This goes on forever in two directions
What is a line
This is the term for a 90 degree angle
What is right angle
All angles in every triangle will add up to this number of degrees
What is 180 degrees
≅
What is congruent
Angle pairs formed by two lines crossing
What are vertical angles
this has one endpoint and continues in one direction forever
What is a ray
An angle that is less than 90 degrees
What is acute
A triangle that has all sides the same length
What is equilateral
∡
What is an angle symbol
Two adjacent angles that sum to 180 degrees
What is a linear pair
This is part of a line
What is a line segment
an angle that is greater than 90 degrees
What is obtuse
A triangle with one angle greater than 90 degrees
What is obtuse triangle
∆
What is a triangle symbol
A right triangle has one angle that is 35 degrees. What is the measure of the 3rd angle
What is 55 degrees
two lines that are the same distance apart and will never touch
What are parallel lines
this is the number of degrees in a straight angle
What is 180 degrees
A triangle with two sides the same length
What is isosceles
∥
What is parallel
∡A≅∡A
What is the reflexive property
lines that intersect to form a right angle
What is perpendicular
This is used to measure angles
What is a protractor
A triangle with a 90 degree angle and no sides the same length
What is right, scalene
⊥
What is perpendicular
CPCTC
What is Corresponding Parts of Congruent Triangles are Congruent