2.1 terms
- 1. Terms of Endearment Conditional Statements: 2.1
- 2. Conditional Statement Statement containing a hypothesis and conclusion
- 3. If-then form The hypothesis is identified by the “if” The conclusion is identified by the “then”
- 4. Writing a statement in if-then form You want to avoid words like “it” when you start out your statement For example, if you are putting the following in if-then form: A number divisible by 4 is also divisible by 2…you don’t want to say: If it is divisible by 4, then it is divisible by 2. You would want to identify what it is by saying: If a number is divisible by 4, then it is divisible by 2. It is okay to use “it” after you have already identified what “it” is
- 5. Converse Statement that switches the hypothesis and conclusion CO nverse... C hanges the O rder of the Conditional statement
- 6. Negation This is the negative of the statement
- 7. Inverse This is a statement that negates both the hypothesis and conclusion
- 8. Contrapositive The statement is the negation of the converse In other words, this does it all…it makes the hypothesis and conclusion negative and switches the order CO ntra Positive … C hanges the O rder and makes it Negative
- 9. Line Postulates Through any two points there exists exactly on line A line contains at least two points If two lines intersect, then their intersection is exactly one point
- 10. Plane Postulates Through any 3 non-collinear points there exists exactly one plane A plane contains at least 3 non-collinear points If two points lie in a plane, then the line containing them lies in a plane If two planes intersect, then their intersection is a line