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| circumference |
2 pi radius
pi diameter |
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bwaybri Fri, 02 Oct 2009 01:56:01 GMT |
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| area of a circle |
pi radius squared |
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bwaybri Fri, 02 Oct 2009 01:56:01 GMT |
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| area of a triangle |
base times height over 2
1/2 base times height |
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bwaybri Fri, 02 Oct 2009 01:56:01 GMT |
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| area of a rectangle |
length times width |
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bwaybri Fri, 02 Oct 2009 01:55:17 GMT |
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| area of a square |
s squared |
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bwaybri Fri, 02 Oct 2009 01:55:17 GMT |
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| 2 angles whose sum is 180 degrees |
supplementary angles |
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bwaybri Fri, 02 Oct 2009 01:55:17 GMT |
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| 2 angles whose sum is 90 degrees |
complementary angles |
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bwaybri Fri, 02 Oct 2009 01:55:17 GMT |
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adjacent and supplementary angles
2 adjacent angles whose non-common sides are opposite rays |
linear pair |
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bwaybri Fri, 02 Oct 2009 01:53:49 GMT |
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| 2 angles that share a common vertex and whose sides from 2 pairs of opposite rays |
vertical angles |
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bwaybri Fri, 02 Oct 2009 01:53:49 GMT |
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| a ray that divide an angle into 2 congruent adjacent angles |
angle bisector |
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bwaybri Fri, 02 Oct 2009 01:53:49 GMT |
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| used for finding the coordinates of the midpoint of a segment in a coordinate plane |
midpoint formula |
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bwaybri Fri, 02 Oct 2009 01:53:49 GMT |
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| a segment, ray, line, or plane that intersects a segment at its midpoint |
segment bisector |
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bwaybri Fri, 02 Oct 2009 01:51:40 GMT |
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| the point that divides a segment into two equal parts |
midpoint |
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bwaybri Fri, 02 Oct 2009 01:51:40 GMT |
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| 2 angles that share a common vertex and side, but have no common interior parts |
adjacent angles |
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bwaybri Fri, 02 Oct 2009 01:51:40 GMT |
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| exactly 180 degrees |
straight angle |
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bwaybri Fri, 02 Oct 2009 01:51:40 GMT |
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| between 90 and 180 degrees |
obtuse angle |
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bwaybri Fri, 02 Oct 2009 01:49:12 GMT |
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| exactly 90 degrees |
right angle |
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bwaybri Fri, 02 Oct 2009 01:49:12 GMT |
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| between 0 and 90 degrees |
acute angle |
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bwaybri Fri, 02 Oct 2009 01:49:12 GMT |
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| if p is in the interior of <qrs, then m<qrp + m<prs = m<qrs |
angle addition postulate |
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bwaybri Fri, 02 Oct 2009 01:49:12 GMT |
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| the rays of an angle can be matched up with real numbers (from 0 to 180) on a protractor so that the measure of the angle equals the absolute value of the difference of the two numbers |
protractor postulate |
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bwaybri Fri, 02 Oct 2009 01:47:48 GMT |
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| segment ab=6 |
length of a segment (notation) |
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bwaybri Fri, 02 Oct 2009 01:47:48 GMT |
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| angles with the same measure |
congruent angles |
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bwaybri Fri, 02 Oct 2009 01:47:48 GMT |
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| 2 rays that share the same endpoint (or initial point) |
angle |
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bwaybri Fri, 02 Oct 2009 01:47:48 GMT |
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| segments that have the same length. if ab and xy have the same length then ab = xy |
congruent segments |
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bwaybri Fri, 02 Oct 2009 01:45:09 GMT |
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| used to find distance between 2 points on a coordinate plane |
distance formula |
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bwaybri Fri, 02 Oct 2009 01:45:09 GMT |
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if b is between a and c, then ab + bc = ac.
if ab + bc = ac, then b is between a and c |
segment addition postulate |
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bwaybri Fri, 02 Oct 2009 01:45:09 GMT |
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| points on a line can be matched one to one with the real numbers. the real number that corresponds to a point is the coordinate of the point |
ruler postulate |
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bwaybri Fri, 02 Oct 2009 01:45:09 GMT |
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| all points or sets of points the figures have in common |
intersection |
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bwaybri Fri, 02 Oct 2009 01:04:43 GMT |
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| 2 rays tat share a common initial point and face opposite directions |
opposite rays |
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bwaybri Fri, 02 Oct 2009 01:04:05 GMT |
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| points that lie on the same plane |
coplanar points |
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bwaybri Fri, 02 Oct 2009 01:04:05 GMT |
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| points that lie on the same line |
collinear points |
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bwaybri Fri, 02 Oct 2009 01:04:05 GMT |
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piece of line with only one endpoint (initial point) and continues forever in one direction
named by the endpoint and a second point on a ray (name MUST begin with the endpoint!) |
ray |
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bwaybri Fri, 02 Oct 2009 01:04:05 GMT |
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can be called a segment
a section of a line that has 2 endpoints
named by its endpoints |
line segment |
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bwaybri Fri, 02 Oct 2009 01:02:36 GMT |
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extends forever in 2 dimensions (has no thickness)
a flat surface consisting of infinitely many points
usually represented by a 4-sided figure
named with a capital letter or 3 points on the surface of the plane |
plane |
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bwaybri Fri, 02 Oct 2009 01:02:36 GMT |
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extends forever in one dimension
has arrows on each end
contains an infinite number of points
always straight
named with a lowercase script letter or by any two points on the it |
line |
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bwaybri Fri, 02 Oct 2009 01:02:36 GMT |
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has no dimension (no length, width, thickness)
represented by a dot
named using one capital letter |
point |
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bwaybri Fri, 02 Oct 2009 01:02:36 GMT |
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| an example that shows a conjecture is false |
counterexample |
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bwaybri Fri, 02 Oct 2009 00:58:37 GMT |
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| an unproven statement based on observations |
conjecture |
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bwaybri Fri, 02 Oct 2009 00:58:19 GMT |
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| a process that includes looking for patterns and making conjectures |
inductive reasoning |
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bwaybri Fri, 02 Oct 2009 00:58:04 GMT |
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| uses facts, definitions, and accepted properties to make an argument |
deductive reasoning |
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bwaybri Fri, 02 Oct 2009 00:57:26 GMT |
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