Vocab #1
Two angles whose measures have a sum of 90 degrees.
What are Complementary Angles
Points that lie on the same plane.
What are Coplanar Points
If k=3, then 3=k
What is the Symmetric Property
The property being used if -7(x - 4) = -7x + 28.
What is the Distributive Property
What definition is represented by the statement:
m<1 + m<2 = 180 degrees
What is the Definition of Supplementary Angles
Two angles whose sum have a measure of 180 degrees.
What are Supplementary Angles
Two lines that intersect to form a 90 degree angle.
What are Perpendicular Lines
If 2x = 14, then x = 7
What is the Division Property of Equality
If y/2 = -10, then y = -20.
What is the Multiplication Property of Equality
What definition is represented by the statement:
∠𝐴 ≅ ∠𝐵
Two angles that have the same measure.
What are Congruent Angles
A logical argument that uses deductive reasoning to show that a statement is true.
What is a Proof
4=4
What is the Reflexive Property
If x + 4 = 10, then x = 6.
What is the Subtraction Property of Equality
The postulate represented by the following statement:
m<ABC + m<CBD = m<ABD
What is the Angle Addition Postulate
Points that lie on the same line.
What are Collinear Points
A statement that can be proven such as a2 + b2 = c2.
What is a Theorem
If -5x - 1 = -11, then -5x = -10
What is the Addition Property of Equality
If a=b, then a may be replaced by b in an expression or equation.
What is the Substitution Property.
The postulate represented by the following statement:
𝐴𝑀̅ + 𝑀𝐵̅ = AB
What is the Segment Addition Postulate
The point that divides a segment into two congruent segments.
What is a Midpoint
A rule that is accepted without proof.
What is a Postulate
If 10a=2b and 2b=c, then 10a=c
What is the Transitive Property
If a = b, and b = c, then a = c.
What is the Transitive Property
What definition is represented by the statement:
m<1 + m<2 = 90 degrees
What is the Definition of Complementary Angles