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IGHS Winkels
Geometry Chapter 1 Vocabulary
Term | Definition |
---|---|
postulate | a statement that is accepted without proof |
point | a location in space |
line | a geometric figure made up of infinitely many points; it extends endlessly in two directions |
line segment | a part of a line; it has two endpoints |
ray | a part of a line; it has one endpoint |
plane | a flat surface; it has no thickness; it extends endlessly in all directions |
congruent line segments | line segments that have the same length |
midpoint | the point that divides a line segment into two congruent parts |
bisector | a line that intersects a line segment at its midpoint |
collinear points | points on the same line |
theorem | a statement that can be proved |