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Lines
Angles
Basic Elements
Parallel Lines
Miscellaneous
100
two lines that are the same distance apart and will never touch
What are parallel lines?
100
This is a 90 degree angle
What is a right angle?
100
this is defined by two points in space
What is a line?
100
This is the definition of parallel lines
What are two lines in the same plane that do not intersect?
100
This is the distance formula.
What is | x1 - x2 | ?
200
two lines that intersect to form a right angle
What are perpendicular lines?
200
An angle that is less than 90 degrees
What is an acute angle?
200
This is defined by three points in space
What is a plane?
200
This is a line that crosses two other lines.
What is a transversal?
200
This is the midpoint formula
What is (x1 + x2) / 2 ?
300
this element has one endpoint and continues in one direction forever
What is a ray?
300
an angle that is greater than 90 degrees
What is an obtuse angle?
300
Points that lie in the same plane are called this.
What is coplanar?
300
Two angles formed by intersecting lines that share a vertex but have no common side.
What are vertical angles?
300
A right triangle has one angle that is 45 degrees. What is the measure of the 3rd angle
What is 45 degrees
400
This is part of a line with two endpoints
What is a line segment?
400
this is the number of degrees in a straight angle
What is 180 degrees?
400
When two planes intersect, this is formed.
What is a line?
400
These two pairs of angles on a transversal are supplementary.
What are same side interior angles and same side exterior angles?
400
A quadrilateral has 3 angles measuring 90 degrees, 100 degrees, and 70 degrees. What is the measure of the 4th angle?
What is 100 degrees
500
two lines in different planes that do not intersect
What are skew lines?
500

These are two angles that share the same vertex and a common side.

What are adjacent angles?

500
When three planes intersect they could form a line, or they could form this.
What is a point?
500
These pairs of angles on a transversal are congruent.
What are corresponding angles, alternate interior angles, and alternate exterior angles?
500
A boat has a sail with one pair of perpendicular lines, and two sides the same length. What kind of triangle is it?
What is Right, isosceles