Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
1. Undefined terms
|
Point, line and plane are considered undefined terms because they are explained using examples and descriptions.
|
|
9. opposite rays
|
two rays that share a common endpoint and contiue in opposite directions on the same line
|
|
10. perpendicular lines
|
The two lines interesect to form 4 right (90 degree) angles.
The slopes of perpendicular lines are opposite reciprocals of one another. Ex: 2 and -1/2 |
|
15. Intersection
|
The SHARED point(s) of two or more shapes
|
|
16. Union of two geometric figures
|
The set of points that are in EITHER figure.
|
|
23. vertical angles
|
The nonadjacent angles formed by two intersecting lines.
In other words, the opposite angles in an X. They are always congruent to each other. |
|
24. adjacent angles
|
Two angles that share a common side and a common endpoint but no common interior points.
In other words, two angles touching right next to each other. |
|
25. supplementary angles
|
Two angles whose sum is 180 degrees. (They do not have to be adjacent)
|
|
26. complementary angles
|
Two angles whose sum is 90 degrees. (They do not have to be adjacent)
|
|
27. Inductive Reasoning
|
Reasoning that uses specific examples to arrive at a prediction.
|
|
28. Conjecture
|
An educated guess based on known information.
|
|
29. Counterexample
|
A false example to a conjecture.
|
|
30. Deductive Reasoning
|
The use of facts, rules, definitions or properties to reach logical conclusions.
|
|
31. Postulates
|
A statement that describes a basic relationship between geometric terms. Accepted as true without proof.
|
|
32. Theorem
|
A conjecture that is shown to be true.
|
|
33. Conditional statement
|
if-then statements
p implies q |
|
34. hypothesis
|
The initial condition of a conditional statement.
The phrase following "if" in an if-then statement. |
|
35. conclusion
|
The result of a conditional statement.
The phrase following "then" in an if-then statement. |
|
36. Converse statement
|
original statement
p implies q converse statement q implies p |
|
37. inverse statement
|
original statement
p implies q inverse statement not p implies not q |
|
38. contrapositive statement
|
original statement
p implies q contrapositive statement not q implies not p |
|
39. Biconditional statement
|
The conjunction of a true conditional statement and its converse
p if and only if q |
|
distance formula
|
Given two points
|
|
midpoint formula
|
Given two points
|