In the ancient city of Marrakesh polygons are on display.

The Petronas Towers in Indonesia provide an opportunity to explore the composite shapes used in the design of the towers.

The Petronas Towers in Indonesia provide an opportunity to explore the composite shapes used in the design of the towers.

In this program we explore the properties of quadrilaterals. We do this in the context of two real-world applications.

Stonehenge is best known as a circular structure.

Frank Lloyd Wright’s architectural masterpiece Falling Water is also a stunning assembly of quadrilateral shape

The Puerta de Europa towers in Madrid bring parallelograms front and center.

In this program we explore the properties of triangle. We do this in the context of two real-world applications.

The Bank of China building in Hong Kong is a dramatic example of triangular support.

The Eiffel Tower includes quite a number of exposed triangular trusses.

The ancient port city of Corinth in Greece allows us to explore the evolution of sailing.

This cheat sheet gathers together the resources on the topic of parallel and perpendicular lines. See the descriptions and links below. Each link takes you to a collection of resources around that topic.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to quadrilaterals and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.

This is part of a collection of definitions related to triangles and related concepts.