Semester One Geometry Honors Final
Terms
undefined, object
copy deck
 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(n2)
 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(n2)]/n or 180360/n
 m ex. angles in reg. polygon
 360/n
 point slope
 yy1 = 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
 ab<c<a+b