Basics of Geometry
Used to find length when given coordinates.
What is the distance formula?
A statement using If...then...
What is a conditional statement?
When lines do not intersect in a plane.
What is parallel?
Perpendicular lines form this.
What is a right angle?
Three types of rigid transformations.
What are translation, reflection, and rotation?
Two rays with common endpoint.
What is an angle?
When you reverse the hypothesis and conclusion.
What is a converse?
Lines that do not intersect and are not coplanar.
What are skew lines?
Forms a 90 degree angle through the midpoint.
What is a perpendicular bisector?
Another name for a translation.
What is a vector?
Position of B when AB + BC = AC is true.
What is between?
An unproven statement.
What is a conjecture?
Lines that have equal slopes.
What are parallel lines?
Linear pair of congruent angles.
What are perpendicular lines?
Same size and same shape.
What is a rigid motion?
Angles whose sum is 180 degrees.
What are supplementary angles?
Most often used property of equality.
What is substitution?
When two lines are parallel to the same line.
What is parallel to each other?
Characteristic of perpendicular lines.
What is product of slopes equals negative one?
Shows symmetry between image and preimage.
What is the line of reflection / symmetry?
Formed by two sets of opposite rays with the same endpoint.
What are vertical angles?
A statement that is accepted without proof.
What is a postulate?
Pairs of congruent angles when parallel lines cut by transversal.
What are corresponding, alternate interior, and alternate exterior angles?
Distance from a point to a line.
What is length of perpendicular segment?
Same as a double reflection over intersecting lines.
What is a rotation?