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You are reading an older version of this FlexBook® textbook: CK-12 Foundation and Leadership Public Schools, College Access Reader: Geometry Go to the latest version.
Rating Guide: DK: I am sure I don’t know it K: I am sure I know it ? I’m not sure
Word Before Lesson/Unit Definition After Lesson/Unit
Point
Line
Plane
Dimension
Space
Collinear
Coplanar
Segment
Endpoint
Ray
Intersection
Postulate
Theorem
Congruent
Midpoint
Bisector
Construction
Compass
Straightedge
Angle
Vertex
Side
Right angle
Perpendicular
Acute
Obtuse
Straight Angle
Complementary angles
Supplementary angles
Linear pair
Vertical angles
Polygon
Concave
Convex
Diagonals
Equiangular
Equilateral
Regular
Inductive reasoning
Deductive reasoning (logic)
Conditional/if-then statements
Hypothesis
Conclusion
Conjecture
Counterexample

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