# Math Chapter 1 and 2

Home > Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards.

1. Inductive reasoning
method used for drawing conclusions from a limited set of observations. General----> Specific
2. deductive reasoning
logic to draw conclusions from statements already accepted as true.
3. point
• -zero dimensions
• -has locations only
• -capital letter (A,B,C)
4. line
• straight path with no thickness (one dimension)
• infinite number of points
• extended without end in both directions
5. line segment
part of a line thats bounded by two end points
6. plane
• flat unbounded (infinite) surface with no thickness
• two dimensional
• represented by a parallelogram
• capital letter in corner
7. colinear
points contained by the same line
8. coplaner
points that contained in the same plane
9. noncollinear
points not on a single line
10. concurrent
lines that contain a common point
11. ray
• part of a line that extends endlessly in one direction
• name using endpoints first
• symbol points to the right
12. angle
• a pair of rays that share the same endpoint
• sides: rays
• vertex common endpoint
• name using 3 points
13. polygon
• lies in a plane
• bounded by line segments
• two dimensional
14. polyhedron
• lies in space
• bounded by polygons (no curves)
• three dimensional
15. perimeter
• sume of the lengths of its sides
• measured in units
16. area
surface included in square units or units2
17. circle
set of all points that are a fixed distance or radius from a given point in the plane.
18. constructions
created with straightedge and compass
19. bisect
to divide into two equal parts
A= 1/4(a+c)(b+d)
21. conditional statements
consists of two clauses, one which begins with the word "if" or "when" or some equivalent word
22. hypothesis
the letter a or "if"
23. conclusion
the letter b or "then"
24. Euler diagram
uses circles to illustrate how conditional statements relate to each other
25. converse
statement found by interchanging the hypothesis and conclusion of the conditional statement
26. contrapositive
statement formed by interchanging the a and b and denying both
27. inverse
formed by denying both a and b
28. syllogism
• an argument in the from
• a--> b
• b--> c
• a-->c
29. Direct Proof
argument of syllogism
30. premises
statements of the arguement
31. conclusion
conncets the first to the last
32. theorem
statement that is proved by reasoning deductively from already accepted statements
33. Indirect proof
assumption made at the beginning that leads to a contradiction. The contradiction indicates that the assumption is false and the desired conclusion is true
34. circularity
impossible to define everything without going around in circles
35. undefined words
• point
• line
• plane
36. postulate
statement assumed to be true without proof
37. "determine"
if there are two points, then there is exactly one line that contains them
38. Pythagorean Theorem
• a2+b2= c2
• (must be a right angle)
39. Triangle Sum Theorem
the sum of the angles of a triangle is 180o
40. Circle Theorems
• if the diameter of a circle is d, its circumference is pi-d
• If the radius of a circle is r, its area is pi-r2

### Card Set Information

 Author: Anonymous ID: 104760 Filename: Math Chapter 1 and 2 Updated: 2011-09-28 00:22:26 Tags: math geometry Folders: Description: ilkjhgdfsdasfghjkl Show Answers:

Home > Flashcards > Print Preview