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Geometry

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**NEW videos added regularly**

Basics of Geometry

Points, Lines and Planes

Segments and Congruence

Midpoint and Distance Formulas

Area of Basic Composite Figures

Area and Perimeter of Rectangles

Reasoning and Logic

Conditional Statements and Negations

Inverse, Converse and Contrapositive

Negations, Conjunctions and Disjunctions

Finding Counterexamples

Segments and Angles

Measuring and Classifying Angles

Angle Pair Relationships

Solving equations using Vertical Angles and/or Linear Pairs

Finding Midpoints and Endpoints

Segment Addition and Congruence

Midpoint and the Distance Formula

Angle Addition and Angle Bisectors

Pythagorean Theorem

Proofs - Segment Congruent Example

Lines and Transversals

Parallel and Perpendicular Lines: Identifying graphically and from equations

Writing equations of parallel and perpendicular lines

Triangles

Triangle Sum Theorem

Similar Triangles (finding a missing side length)

Extended Angles (aka Exterior Angles) in Triangles

Multiple Triangles with Exterior or Extended Angles

Triangle Congruence of two triangles using SSS, SAS, ASA, AAS

Solving a Right Triangle

Triangle Proofs using SSS and SAS

30-60-90 Triangles

45-45-90 Triangles

Similarity

Right Triangles and Trigonometry

Sine, Cosine and Tangent (using SOH CAH TOA to find angles and sides)

Using the Pythagorean Theorem More Than Once

Quadrilaterals and Polygons

Parallelogram Properties

Area and Volume

Area of regular polygons

Circles

Area of a segment in a circle (the shaded region made by a line segment)

Angles of Intersecting Secant and Tangent Lines in Circles

Composite Area: Rectangles and Circles

Special Segments: Finding Line Segment Length in a Circle

Transformations

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