Angle Pair Relations
Statements
Postulates and Theorems
Properties
Angles
100
The sum of these angles is equal to 90 degrees.
What are complementary angles?
100
A statement that can be written in the form “If p, then q.”
What is a conditional statement?
100
A statement that is accepted without proof.
What is a postulate?
100
“If a, b, and c are real numbers and a=b, then a+c=b+c.”
What is the addition property of equality?
100
An angle with a measure less than 90 degrees.
What is an acute angle?
200
The sum of these angles is 180 degrees.
What are supplementary angles?
200
Follows the "if" in a conditional statement.
What is a hypothesis?
200
A statement that can be proven.
What is a theorem?
200
“If a, b, and c are real numbers and a=b, then a-c=b-c.”
What is the subtraction property of equality?
200
An angle with a measure equal to 90 degrees.
What is a right angle?
300
These angles share a vertex and a common side.
What are adjacent angles?
300
Follows "then" in a conditional statement.
What is the conclusion?
300
“If point B is on AC and between points A and C, then AB+BC=AC.”
What is the segment addition postulate?
300
“If a is a real number, then a=a.”
What is the reflexive property?
300
An angle with a measure more than 90 degrees, but less than 180 degrees.
What is an obtuse angle?
400
These angles are both supplementary and adjacent.
What is a linear pair?
400
A conditional statement is either true or false, but not both.
What is the truth value?
400
“If point D lies in the interior of ?angle ABC, then the measure of angle ABD + measure of angle? DBC = measure of angle ?ABC.”
What is the angle addition postulate?
400
“If a and b are real numbers and a=b, then a can be substituted for b.”
What is the substitution property?
400
An angle with a measure equal to 180 degrees.
What is a straight angle?
500
Two nonadjacent angles that are formed by two intersecting lines.
What are vertical angles?
500
When the hypothesis is true, and the conclusion is false.
What is a false truth value?
500
“If two angles are a linear pair, then the angles are supplementary.”
What is the linear pair postulate?
500
“If a, b, and c are real numbers, a=b, and b=c, then a=c.”
What is the transitive property?
500
This tool is used to measure the number of degrees of an angle.
What is a protractor?
M
e
n
u