Tools of Geometry
What undefined term represents an exact location with no size?
What is a Point
What type of statement is written in “if–then” form?
Conditional statement
What is a line that crosses two or more other lines called?
Transversal
Which postulate uses two sides and the included angle?
SAS
Which rigid transformation slides a figure without changing its orientation or shape?
What is Translation
What is the name of a part of a line that has one endpoint and extends forever in one direction?
What is Ray
In a conditional statement, which part is the “if” part?
Hypothesis
Which angle pair is congruent when parallel lines are cut by a transversal and lie on opposite sides inside the lines?
Alternate Interior Angles
Which congruence method is used only for right triangles?
HL
Which rigid transformation reverses orientation and uses a line that every point is the same distance from?
What is Reflection
What do we call the point that divides a segment into two congruent parts?
Midpoint
What do you get when you switch the hypothesis and conclusion?
Converse
What do we call two adjacent angles that form a straight line?
Linear Pair
What does it mean when two triangles are congruent?
If a shape has same sides angles and shape
A figure is turned 90° about the origin and remains congruent to the original. What type of transformation occurred?
What is Rotation
How many points are needed to name a plane?
Three noncollinear Points
Which logical form is always logically equivalent to the original conditional?
Contrapositive
Which angles are opposite each other when two lines intersect?
Vertical Angles
What is the other postulate that does not work besides SSA?
ASS, AAA
What do we call the original figure before a transformation is applied?
What is Pre-Image
Why are point, line, and plane called undefined terms in geometry?
They are accepted without formal definitions and used to define other terms
What is an example that shows a statement is false called?
Counter example
Why are same-side interior angles supplementary when lines are parallel?
Because they form a linear pair across parallel lines
Which congruence postulate uses two angles and a non-included side?
AAS
Why are rigid transformations useful for proving triangle congruence?
What is because they preserve distance and angle measure, keeping figures congruent