Reading...
Play button
Play button
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
|
Inductive reasoning
|
patterns
|
|
|
space
|
set of all points
|
|
|
postulate
|
geometric facts you assume to be true
|
|
|
theorum
|
geometric facts you PROVE to be true
|
|
|
opposite rays
|
two collinear rays with one endpoint
|
|
|
Conditional statement
|
if...then
|
|
|
biconditional
|
reverseable, statement and converse are true
|
|
|
law of detachment
|
1. If A is true, then B.
2. A is true. 3. B is true. |
|
|
Law of Syllogism
|
If p...q and q...r, then p...r
|
|
|
sum of interior angles
|
180(n-2)
|
|
|
How much do exterior angles of a convex polygon add up to?
|
360 degrees
|
|
|
regular polygon
|
equilateral and equiangular
|
|
|
m of each interior angle in reg. polygon
|
[180(n-2)]/n or 180-360/n
|
|
|
m ex. angles in reg. polygon
|
360/n
|
|
|
point slope
|
y-y1 = m(x - x1)
|
|
|
slope of horizontal lines
|
0 slope
|
|
|
slope of vertical lines
|
no slope
|
|
|
no choice theorum
|
if two angles of one triangle are congruent to two angles of another, then the triangles are congruent
|
|
|
median
|
seg joining vertex of a triangle and the midpt of its opposite side
|
|
|
centroid
|
where the three medians intersect, divides median into ratio of 2:1 from vertex to midpt
|
|
|
altitude:
|
seg drawn from a vertex of a triangle and perp to the line containing the opposite side
~doesn't have to be inside the triangle ~every triangle has 3 ~3 alts intersect at vertex of rt triangle |
|
|
orthocenter
|
where 3 altitudes intersect
|
|
|
ex. angle theorum
|
ex. angles r > remotes but <180
|
|
|
two sides of a triangle are....to the third side
|
a-b<c<a+b
|
