Geometry
Vocabulary
| Dictionary - Oracle Think Quest |
| Dictionary - Cool Math |
| Geometry Glossary - Definitions of many geometry terms |
Foundations of Geometry - Unit 1
| Undefined Terms - Points, Lines, & Planes, Collinear, Coplanar Points, Intersecting Lines in Space, Skew Lines, Angles & Pairs of Angles |
| Undefined Terms - Regent Prep Oswego NY |
| Basic Terms - Math is Fun |
| Undefined Terms - Grade A Math Help |
| Pairs of Angles - WYZAnt |
| Undefined Terms - Math Open Reference |
Distance & Midpoint Formulas
| Distance Formula - Purple Math |
| Distance Formula on Coordinate Plane |
| Midpoint of a Line Segment - Math Open Reference |
Constructions
| Copy Angle, Copy Line Segment, Bisect Line Segment, Bisect an Angle, Perpendicular from a point on a line, Perpendicular from a point not on a line, Perpendicular Bisector, triangle inscribed in a circle, square inscribed in a circle, & triangle circumscribed about a circle |
| How to do construction problems - Math Open Reference |
| Basic construction - Regent Prep Oswego NY |
Logic - Unit 2
| Inductive Reasoning, Conjectures, Counterexamples Logic – Truth Values, Conjunction, Disjunction, Truth Tables and Venn Diagrams, Conditional Statement, If Then Form, Converse, Inverse, & Contrapositive Deductive Reasoning, Law of Detachment, & Law of Syllogism |
| Conjunction, Disjunction, Conditional, Biconditional - Regent Prep Oswego NY |
| Converse, Inverse, Contrapositive - Regent Prep Oswego NY |
| Flash cards For Logic Unit - Quizlet |
| Venn Diagrams - Annenberg Learner |
Parallel & Perpendicular Lines - Unit 3
| Alternate Interior, Alternate Exterior, & Corresponding Angles, Interior Angles on Same Side of Transversal, Proving Lines Parallel & Perpendicular, Slopes |
| Parallel Line and Pairs of Angles - Math is Fun |
| Slope of a Line - Math Open Reference |
Congruent Triangles - Unit 4
| Classifying Triangles by Sides and Angles, Sum of Angles of Triangles – Angle Sum Theorem, Exterior Angle Theorem, Congruent Triangles- Name Corresponding Parts, Proving Congruence – SSS, SAS, ASA, AAS, HL, & CPCTC |
| Exterior Angles of Triangles - Regent Prep Oswego NY |
| Notes on Triangles - Cliffs Notes |
| SAS Triangle Congruency |
Triangles & Their Relationships - Unit 4B
| Isosceles and Equilateral Triangles – Properties, Perpendicular Bisectors, Angle Bisectors, Medians, Altitudes of Triangles, Concurrency, Centroid, Incenter, Circumcenter & Orthocenter |
| Isosceles Triangle Theorem - Regent Prep Oswego NY |
| Concurrence - Regent Prep Oswego NY |
Inequalities & Triangles - Unit 5
| Triangle Inequality – Largest Side and Largest Angle, Range for length of side of a triangle, Inequalities Involving Two Triangles – SAS, SSS, Triangle Inequality Theorem, Shortest Distance Between a Point and a Line |
| Triangle Inequalities - Regent Prep Oswego NY |
| Triangle Inequalities Proof - Basic Mathematics |
| Triangle Inequality Theorem - Math for Morons Like Us |
Similarity - Unit 6
| Ratios, Proportions – Properties and Scale Factors, Similar Polygons, Similar Triangles – AA, SSS, SAS, Parallel Lines & Proportional Parts – Divides Segments into Parts, Proportional Parts - Corresponding Perimeter, Medians, Altitudes & Angle Bisectors have same ratio, Proportional Parts of 1 Triangle – Angle Bisector divides one side into proportional parts |
| SAS Similarity - Geogebra |
| Similar Triangles - Math is Fun |
| Theorems about Similar Triangles |
Right Triangles - Unit 7
| Geometric Mean, Rationalize the denominator, Parts of a Right Triangle, Altitude is geometric mean, Leg is geometric mean, Pythagorean Theorem and Converse, Special Right Triangles: 30–60–90 and 45–45–90 |
| Pythagorean Theorem & 30-60-90 & 45-45-90 - Cool Math |
| Special Triangles - Math for Morons Like Us |
Trigonometry - Unit 7B
| Sine, Cosine, Tangent, Finding measure of angle, Angles of Elevation & Depression |
| Basic Trig Definitions - Cool Math |
| Sine, Cosine, Tangent - Math is Fun |
Quadrilaterals - Unit 8
| Angles of Polygons, Interior Angles Sum, Exterior Angles Sum, Compare and Contrast the Properties, Diagonals, Altitudes, and Medians of Quadrilaterals, Parallelograms, Rectangles, Rhombi, Squares, Trapezoids and Kites |
| All Kinds of Kites - Geogebra |
| Interior Angles of Triangles - Cool Math |
| Interior Angles of Triangles - Math is Fun |
| Quadrilateral Properties - Math Teacher |
Circles - Unit 9
| Parts, Circumference, and Arc Length, Angles and Arcs – Major Arc, Minor Arc, Semicircle, Central Angle, Arcs and Chords, Tangents, Inscribed Angles Secants, Tangents, and Angle Measures, Special Segments in Circles |
| Length of an Arc - Khan Academy |
| Parts of Circles - Cool Math |
Transformations - Unit 10
| Reflections – Lines of Symmetry and Point of Symmetry, Translations, Rotations, Regular Tessellations, Dilations – Enlarge, Reduce, or Congruent Transformation – Scale Factor |
| Line Symmetry - Annenberg Learner |
| Rotation Symmetry - Annenberg Learner |
| Symmetry - Math is Fun |
| Transformations - Math is Fun |
Area, Surface Area, & Volume - Units 11, 12, & 13
| Area of Parallelograms, Triangles, Trapezoids, and Rhombi, Area of Circles and Sectors, Three Dimensional Figures and Nets, Surface Area & Volume of Prisms, Cylinders, Pyramids, Cones & Spheres, Similar Solids |
| 3D Objects - Shmoop |
| Prisms, Pyramids, Cylinders, Cones - Math Planet |
| Prisms, Pyramids, Cylinders, Cones - Regent Prep Oswego NY |
| Surface Area of a Cylinder - Math Open Reference |
| Video on Volume and Surface Area of a Sphere - About.com Mathematics |
