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Download Geometry Vocabulary (for Midterm Review) Undefined elements
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Geometry Vocabulary (for Midterm Review) Undefined elements: Point Line Plane Definitions & Major Concepts: Collinear points Segment Congruent segments Angle Supplementary Angles Acute angle Angle bisector Vertex Coplanar points Midpoint Ray Vertical Angles Linear Pair Right angle Perpendicular Straight Angle Congruent Segment bisector Congruent angles Complementary Angles Adjacent angles Obtuse angle Theorem/Postulate Opposite rays Hypothesis Bi-conditional (iff) Contrapositive Law of Detachment Conclusion Converse Negation Law of Syllogism Conditional Inverse Conjecture (Draw a valid conclusion) Counter example Parallel (lines or planes) Skew lines Transversal Alternate interior angles Same side interior angles Alternate exterior angles Same-side exterior angles Corresponding angles Triangle Sides of a triangle Vertices of a triangle Angles of a triangle Acute Triangle Obtuse Triangle Equiangular Triangle Right Triangle Vertex angle of an isosceles triangle Legs of an isosceles triangle Base of an isosceles triangle Exterior angle of a triangle Perpendicular Bisector Median Congruence Statement Space Scalene Triangle Isosceles Triangle Equilateral Triangle Special Right Triangles (30-60-90, 45-45-90) Legs of a right triangle Hypotenuse of a right triangle Base angles of an isosceles triangle Remote interior angles of a triangle Proportion/Extended Proportion Angle Bisector Mid-segment, Side-Splitter Altitude Scale Factor, Ratio Similarity Statement Congruent and Similar Polygons Theorems & Formulas: Third Angle Theorem Isosceles Triangle Theorem Reflexive Property Slope Area of a triangle Segment Addition Angle Addition Midpoint Pythagorean Theorem Distance CPCTC Triangle Inequalities for One and Two Triangles (Hinge Theorem/SAS Triangle Inequality) Theorems for Proving Triangles Congruent: SAS SSS ASA AAS HL Theorems for Proving Triangles Similar: SAS SSS AAA Trigonometry Functions: Sine (Sin), Cosine (Cos), Tangent (Tan) Angles of Elevation & Depression
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