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Geometry Chapter 1
Formulas/Vocab
Question | Answer |
---|---|
Distance formula (number line) | AB= I b-a I |
Distance formula (coordinate plane) | d equals the square root of x2-x1 squared plus y2-y1 squared |
Pythagorean Theorem | c squared equals a squared plus b squared |
Midpoint formula (number line) | a+b/2 |
Midpoint formula (coordinate plane) | x1+x2/2, y1+y2/2 |
points on the same line | collinear |
points on the same plane | coplaner |
boundless, 3-dimensional set of all points, lines, and planes | space |
measurable part of a line that consists of 2 endpoints and all the points between them | line segments |
point M is between points p and q if and only if (IFF) p,q, and m are collinear and PM+MQ=PQ | betweenness |
segments that have the same measure | congruent segments |
point on a segment that divides a segment into 2 congruent segments | midpoint |
any segment line or plane that intersects a segment at its midpoint | segment bisector |
part of a line | ray |
formed by two noncollinear rays that have a common endpoint | angle |
the common endpoint | vertex |
a ray that divides an angle into two congruent angles | angle bisector |
angle that measures less than 90 degrees | acute angle |
angle that measures more than 90 degrees | obtuse angle |
angle that is 90 degrees | right angle |