What are two lines that are the same distance apart and will never touch?
Parallel lines
This is the term for a 90 degree angle
Right angle
What is a name for a triangle that has all sides the same length
equilateral
Two lines that intersect to form a right angle
Perpendicular
The term for an angle that is less than 90 degrees
Acute
A triangle with two sides the same length
Isosceles
this line has one endpoint and continues in one direction forever
Ray
The name for an angle that is greater than 90 degrees
Obtuse
A triangle with one angle greater than 90 degrees
Obtuse triangle
A right triangle has one angle that is 45 degrees. What is the measure of the 3rd angle?
What is 45 degrees
this is the number of degrees in a straight angle
180 degrees
A triangle with a 90 degree angle and no sides the same length
Right and scalene
This is the name for a closed figure with at least 3 sides.
Polygon
This tool is used to measure angles
Protractor
All angles in a triangle will add up to this number of degrees
What is 180 degrees
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
Right and isosceles