Lessons - Geometry

Angles

Types of Angles

Classify Triangles by their Angles

Complementary Angles

Interior Angle - How to Find it with Regular Polygons

Exterior Angle - How to Find it with Regular Polygons

Parallel and Perpendicular Lines with a Transversal Line

Alternate Exterior Angles

Alternate Interior Angles

Consecutive Interior Angles

Corresponding Angles

Vertical Angles

Parallel and Perpendicular Lines with a Transversal Line - How to Find x to Solve for the Angle

Protractor - How to Measure an Angle

Supplementary Angles

Triangle - How to Find Missing Angle - Inside the Triangle

Triangle with Extended Angles - How to Find the Missing Angle - Inside and Outside the Triangle


Coordinate Geometry and Graphs

Labeling Points in Quadrant I

Labeling Points in All Quadrants

Linear Equations - How to Graph a Linear Equation

Linear Equations with a Restricted Domain on Both Sides - How to Graph

Midpoint Formula - How to Use to It

Plotting Points in Quadrant I

Plotting Points in All Quadrants

Slope - How to Find Slope Using a Graph

Slope - How to Find Slope Using the Formula

Standard Equations - How to Graph a Standard Equation


Circles

Arc Length in Degrees

Arc Length in Radians

Arcs of a Circle - Major Arc vs Minor Arc

Area of a Circle

Area of a Sector of a Circle - Degrees

Area of a Sector of a Circle - Radians

Convert Degrees to Radians

Convert Radians to Degrees

Standard Equation for a Circle Worksheet

Tangent?

What is a Circle? Video


Circle Theorems

Circle Theorem - Inscribed Angle in a Semi-Circle is 90° Worksheet

Circle Theorem - Inscribed Angle Theorem Worksheet


Geometric Construction

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Geometry Formulas

Circle - Area Formula

Distance Formula - How to Use to It

Midpoint Formula - How to Use to It

Parallelograms - Area Formula

Rectangles - Area Formula

Rectangles - Perimeter Formula


Geometric Transformations

Translations

Reflections

Rotations

Dilation Worksheet


Polygons

Area

Composite Figures - Area

Parallelograms - Area

Rectangles Area - Count with Grids

Rectangles Area - Formula Method with Grids

Rectangles - Area Formula Method without Grids

Rectangles - Area Scaling Up

Trapezoids - Area - Formula Method

Perimeter

Composite Figures - Perimeter

Rectangles - Perimeter with Grids

Rectangles - Perimeter Formula Method

Rectangles - Perimeter Scaling Up


Solid Geometry

Surface Area of a Cylinder Worksheet

Volume of a Cylinder Worksheet


Triangles

Classify Triangles by their Angles

Classify Triangles by their Sides

Law of Sines worksheet

Ambiguous Case - Law of Sines worksheet

Law of Cosines worksheet

Pythagorean Theorem - Why it Works worksheet

Pythagorean Theorem - Find the Missing Side

Pythagorean Theorem - Converse

Similar Triangles - What are they? worksheet

Similar Triangles - Find the Odd One Out

Triangle - How to Find Missing Angle - Inside the Triangle

Triangle with Extended Angles - How to Find the Missing Angle - Inside and Outside the Triangle