General Vocab
Parts of a Conditional Statment
Identifying Triangles
Kinds of Proofs
Lines and Angles
100
Polygon
What is a closed plane figure formed by three or more line segments.
100
The part of a conditional statement following the word "if".
What is a hypothesis?
100
A triangle with three acute angles
What is an acute triangle?
100
A style of proof that presents the step of the proof and their matching reason as sentences in a paragraph.
What is a paragraph proof?
100
Coplaner lines that will never intersect.
What are parallel lines?
200
A statement that describes a mathematical object and can be written as a true biconditional.
What is a definition?
200
The statement formed by exchanging the hypothesis and the conclusion.
What is the converse?
200
A triangle with three congruent sides
What is an equilateral triangle?
200
A proof that involves calculations and references to a coordinate plane.
What is a coordinate proof?
200
Non-adjacent angles that lie on opposite sides of the transversal.
What are alternate interior angles.
300
Any statement that that you can prove.
What is a theorem?
300
One example that is used to show a conjecture is false.
What is a counter example?
300
A triangle with no congruent sides.
What is an isosceles triangle?
300
A style of proof that uses boxes and arrows to show the structure of the proof.
What is a flowchart proof?
300
Angles that lie on opposite sides of the transversal.
What are alternate exterior angles?
400
A line that intersects two coplaner lines at two different points.
What is a transversal
400
Opposite meaning of a statement, and an opposite truth value.
What is the negation?
400
A triangle that has one angle larger than 90 degrees.
What is an obtuse triangle?
400
A list of the steps a proof in the left column, and the matching reason for each step on the right column.
What is a two column proof?
400
Planes that do not intersect.
What are parallel planes?
500
The line that is added to a figure to aid in a proof.
What is an auxiliary line?
500
Weather the statement is true or false.
What is the truth value?
500
A triangle with three congruent acute angles.
What is an equiangular triangle?
500
An argument that uses logic, definitions, properties, and previously proven statements to show that a conclusion is true.
What is the definition of a proof?
500
They are not coplaner, parallel, and do not intersect.
What are skew lines?
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