1/20
Flashcards covering definitions, angle measures, parallel lines, proof language, and miscellaneous concepts from Math 2 lecture notes.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
Line segment
Part of a line that starts at one point and ends at another.
Ray
A line that extends indefinitely in one direction.
Midpoint
A point that divides a segment into two congruent segments.
Angle bisector
A line or ray that divides an angle into two equal parts.
Vertex
The common endpoint where the sides of an angle intersect.
Complementary angles
Two angles whose measures add up to 90°.
Supplementary angles
Two angles whose measures add up to 180°.
Right angle
An angle that measures 90°.
Straight angle
An angle that measures 180°.
Same side exterior angles
Exterior angles on the same side of the transversal.
Same side interior angles
Interior angles on the same side of the transversal; they are supplementary.
Alternate exterior angles
Exterior angles, non-adjacent, and on opposite sides of the transversal; they are equal.
Alternate interior angles
Interior angles, non-adjacent, and on opposite sides of the transversal; they are equal.
Corresponding angles
Angles on the same side of the transversal and in the same position; they are equal.
Vertical angles
Two angles directly across from each other at intersecting lines; they are equal.
Corresponding Parts of Congruent Triangles are Congruent (CPCTC)
If two triangles are congruent, then all corresponding parts are congruent.
Substitution Property of Equality
A quantity may be substituted for its equal.
Reflexive Property
Something is equal to or congruent to itself.
Transitive Property
If two quantities are equal to the same quantity, then they are equal to each other.
Isosceles triangle
A triangle with two equal side lengths and base angles of equal measure.
Exterior angle of a triangle
Equal to the sum of the measures of the remote (or opposite) interior angles.