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Lines
Angles
Undefined Terms
More Angles
Mixed up
100
two coplanar lines that dont intersect
What are parallel lines
100
An angle that has a degree measure of 180 degrees
What is a straight angle
100
Two non-adjacent angles formed by two intersecting lines
What are vertical angles
100
If AB=BC and B is between A and C, the B is the midpoint of AC
What is the definition of a midpoint
200
portion of a line that has one endpoint and it extends in one direction
What is a ray
200
an angle whose degree measure is 90 degrees
What is a right angle
200
Has no thickness or width, used to represent a continuous set of linear points that extend indefinitely in both directions
What is a line
200
sum of the measures of the two angles is 180 degrees
What are supplementary angles
200
If B is between A and C, then AB+BC=AC
What is the segment addition postulate
300
two lines that intersect to form right angles
What are perpendicular lines
300
an angle whose measure is greater than 0 degrees but less than 90 degrees
What is an acute angle
300
Has no actual size, used to represent an object or location in space
What is a point
300
Coplanar angles that have a common vertex and one common side, but no common interior points
What are Adjacent angles
300
Vertical angles are always______.
What is Congruent
400
the measureable part of a line that has two endpoints
What is a line segment
400
Angles are measured in _______.
What is a degree
400
coplanar angles that have a common vertex and one common side, but no interior points
What are adjacent angles
400
Sum of the measures of the two angles is 90 degrees
What are complementary angles
400
The underlying assumptions in a geometric system
What is a postulate
500
two non-coplanar lines that do not intersect
What are skew lines
500
an angle whose measure is greater than 90 degrees but less than 180 degrees
What is an obtuse angle
500
Has no thickness, width, or depth, used to represent a flat surface that extends indefinitely in all directions
What is a plane
500
Two adjacent angles whose non-common sides are two rays going in opposite directions
What are Linear Pair
500
If <1 and <2 are vertical angles and the m<2 is 106 degrees, then the m<1 is____
What is 106 degrees