Angle Basics
Types of Angles
Complementary and Supplementary
Congruent Angles
Intersecting Lines
100
The common endpoint shared by the sides of an angle is called this.
What is vertex?
100
This type of angle has a measure less than 90 degrees.
What is acute?
100
Two angles are said to be complementary if their sum is this measure.
What is 90 degrees?
100
Two angles are said to be congruent if this is the same for both.
What is degree measure?
100
Adjacent angles formed at the intersection of two lines form this.
What is a linear pair?
200
This is the unit used when measuring an angle represented by the symbol °
What are degrees?
200
An angle with measure of 125° would be this type of angle.
What is obtuse?
200
If the measure of an angle is 70°, this would be the measure of its supplement.
What is 110°?
200
This type of angle must always be congruent (because they only have one possible measure).
What are right angles?
200
Lines that intersect to form a right angle are called this.
What is perpendicular?
300
This tool can be used to find the exact measure of an angle.
What is a protractor?
300
All right angles have a degree measure that is exactly this number.
What is 90?
300
Always supplementary, this special type of adjacent angle has non-adjacent sides that are opposite rays.
What is a linear pair?
300
If angle ABC has a complement of 70°, any angle congruent to ABC would have a complement of this measure.
What is 70°?
300
These are the congruent angles formed by the nonadjacent angles of intersecting lines.
What are vertical angles?
400
The two rays extending from the vertex of an angle are called this.
What are sides?
400
Two angles that share a common side and have the same vertex are called this.
What are adjacent angles?
400
The supplement of a right angle must always be this type of angle.
What is a right angle?
400
If two angles are both supplementary to a 120° angle, both angles must have this degree measure.
What is 60°?
400
Perpendicular lines form this number of right angles at their intersection.
What is four?
500
A ray that extends from the vertex of an angle and separates it into two equal parts is called this.
What is an Angle Bisector?
500
This is the type of angle formed by the launch of a space shuttle.
What is a right angle?
500
If the supplement of an angle is 100°, the complement of that same angle would be this measure.
What is 10°?
500
Two angles that are both congruent and supplementary must be this type of angle.
What is right angle?
500
When looking at a pair of angles formed by intersecting lines, they must either be vertical angles or this.
What is a linear pair.
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