Vocabulary
Angle on a Transversal
Angle Pairs
Proofs
100
What is another name for a 90 degree angle?
Right Angle
100
Two lines that never intersect are called?
Parallel
100
What is the complementary angle of 14 degrees?
76 degrees
90 - 14 = 76
100
True or False: Proven is a valid justification.
False: Proven is not a justification. Justification is required to distinguish knowledge from a guess that happens to be right and a justified belief that is supported by evidence. Think about the court system: Just because we think or guess that someone is guilty, unless we have proof, we will not be able to prove that they are.
200
Two angles whose measures have a sum of 90 degrees.
Complementary
200
What are angles that are in matching corners of the parallel lines called?
Corresponding Angles
200
Two angles that share a side but have no interior points in common?
Adjacent Angles
200
What goes first in a proof? What goes last?
The given statement goes first and what is being proven goes last.
300
What is the definition of supplementary?
Two angles whose measure have a sum of 180 degrees
300
What are the angles outside the parallel lines and on opposite sides of the transversal called?
Alternate Exterior
300
What are the angles on the inside of the parallel lines and on opposite sides of the transversal called?
Alternate Interior
300
What is the difference between a postulate and a theorem?
A postulate is a statement that true based on basic geometric principles. A theorem is a mathematical statement that can and must be proven to be true. Like the Pythagorean Theorem.
400
What do you call a line that cuts across two parallel lines?
Transversal
400
If →AG is a bisector of ∠KAH, find m∠KAG.
The measure of angle KAG = 45 degrees
400
What is the name for two adjacent, supplementary angles?
Linear Pair
400
What would the two-column proof look like for the given information below?
500
Angles which are opposite and congruent are called?
Vertical Angle
500
What are the angles on the inside of the parallel lines and on opposite sides of the transversal called?
Alternate Interior
500
What is the supplementary angle of 13 degrees?
167 degrees 180 - 13 = 167
500
How can substitution be used in this proof?
