Studied by 2 peopleConditional Statements
if then statements
Converse
when the hypothesis and the conclusion are reversed
Counterexample
a way to show that a mathematical statement is false
Biconditional
when a conditional AND its converse are both true they can be combined into a single statement with "if and only if"
Complementary angles
sum up to 90°
Supplementary angles
sum up to 180°
Vertical angles
two angles that are on opposite "sides" of two intersecting lines
Perpendicular lines
two lines that intersect to form right angles
theorem 2.2
Angle Bisector Theorem
theorem 2.3
Vertical angles are congruent
theorem 2.4
If two lines are perpendicular, then they form congruent adjacent angles
theorem 2.5
If two lines form congruent adjacent angles, then the lines are perpendicular
theorem 2.6
If the exterior sides of two adjacent acute angles are perpendicular, then the angles are complementary
theorem 2.7
If two angles are supplements of congruent angles (or the same angle), then the two angles are congruent
theorem 2.8
If two angles are complements of congruent angles (or the same angle), then the two angles are congruent
Note
Flashcard