Geometry

14 Tracks 69 Concepts 13 hr 8 min of learning

CodePLU Goal

Upgrading Human Mental Models

Learn how to think in Workflows

Tracks In This Category

The Building Blocks of Shape

6 parts 1 hr Beginner

1 What Are a Point, a Line, a Segment and a Ray?

2 What Are Parallel and Intersecting Lines?

3 What Are Perpendicular Lines and Right Angles?

4 What Is an Angle, Actually?

5 What Are the Types of Angles?

6 How Do You Measure an Angle with a Protractor?

Shapes and Their Families

5 parts 49 min Beginner

1 What Makes a Shape a Polygon?

2 What Kinds of Triangle Are There?

3 Why Do a Triangle's Angles Always Add to 180°?

4 What Are the Types of Quadrilaterals?

5 When Are Two Shapes Really the Same?

Perimeter and Area

5 parts 53 min Beginner

1 What Is Perimeter, and How Do You Find It?

2 How Do You Find the Area of a Rectangle?

3 How Do You Find the Area of a Square?

4 How Do You Find the Area of a Triangle?

5 How Do You Find the Area of a Circle?

Angle Pairs and Parallel Lines

6 parts 1 hr 12 min Beginner

1 What Are Complementary and Supplementary Angles?

2 What Is a Linear Pair of Angles?

3 Why Are Vertically Opposite Angles Always Equal?

4 What Does a Transversal Do to Two Parallel Lines?

5 What Are Corresponding and Alternate Angles?

6 Why Do Co-Interior Angles Add Up to 180 Degrees?

Proving Things About Triangles

5 parts 1 hr Beginner

1 Why Does an Exterior Angle Equal the Two Opposite Angles?

2 Can Any Three Lengths Make a Triangle?

3 Why Does an Isosceles Triangle Have Two Equal Angles?

4 When Are Two Triangles Congruent? SSS and SAS

5 When Are Two Triangles Congruent? ASA and RHS

Pythagoras' Theorem

4 parts 48 min Beginner

1 What Does Pythagoras' Theorem Actually Say?

2 How Do You Find the Hypotenuse?

3 How Do You Find a Shorter Side?

4 Is This Triangle Right-Angled?

Angles in Polygons

4 parts 48 min Beginner

1 Why Do a Quadrilateral's Angles Add Up to 360°?

2 What Is the Angle Sum of Any Polygon?

3 Why Do Exterior Angles Always Add Up to 360°?

4 What Is Each Angle in a Regular Polygon?

What Makes Each Quadrilateral Different

5 parts 1 hr Beginner

1 What Makes a Parallelogram a Parallelogram?

2 What Is Special About a Rhombus's Diagonals?

3 What Does a Rectangle Inherit from a Parallelogram?

4 What Are a Trapezium and a Kite?

5 How Does the Quadrilateral Family Fit Together?

Circles, Measured

5 parts 54 min Beginner

1 What Are the Radius and Diameter of a Circle?

2 What Are a Chord, an Arc, a Sector and a Segment?

3 What Is the Circumference of a Circle?

4 Where Does Pi Come From?

5 How Long Is an Arc?

Area Beyond the Basics

5 parts 1 hr Beginner

1 How Do You Find the Area of a Parallelogram?

2 How Do You Find the Area of a Trapezium?

3 How Do You Find the Area of a Rhombus or a Kite?

4 How Do You Find the Area of a Compound Shape?

5 How Do You Find the Area of a Sector?

Similar Shapes and Scale

4 parts 48 min Beginner

1 When Are Two Shapes Similar?

2 How Do You Find a Scale Factor?

3 How Do You Find a Missing Side in Similar Triangles?

4 What Happens to Area When a Shape Is Enlarged?

Symmetry and Moving Shapes

6 parts 1 hr 10 min Beginner

1 What Is a Line of Symmetry?

2 What Is Rotational Symmetry?

3 How Do You Reflect a Shape in a Mirror Line?

4 How Do You Translate a Shape?

5 How Do You Rotate a Shape?

6 How Do You Enlarge a Shape from a Centre?

Solid Shapes, Measured

6 parts 1 hr 10 min Beginner

1 What Are Faces, Edges and Vertices?

2 What Is a Net of a Solid?

3 How Do You Find the Surface Area of a Cuboid?

4 How Do You Find the Volume of a Cuboid?

5 How Do You Find the Volume of a Prism?

6 How Do You Find the Surface Area of a Cylinder?

Drawing It Yourself

3 parts 36 min Beginner

1 How Do You Construct a Perpendicular Bisector?

2 How Do You Bisect an Angle?

3 How Do You Construct a Triangle from Three Sides?