The Roman Coliseum is a large elliptical structure. Yet, the Romans likely used circular arcs to build it. This segment explores the properties of circles and shows how arcs can be used to create elliptical shapes.

In the ancient city of Marrakesh polygons are on display.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown. These facsimiles were constructed using the Desmos geometry tools (www.Desmos.com/geometry), although any geometry software can be used.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown. These facsimiles were constructed using the Desmos geometry tools (www.Desmos.com/geometry), although any geometry software can be used.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

This is part of a series of math clip art images that are holiday themed. The illustration is shown and then a facsimile of it using basic geometric shapes is shown.

In this instructional resource, we show the steps in constructing an egg shape. In the process, students learn about using common points of tangency to create smooth curves from two different shapes. This activity can be done with pencil, compass, ruler, and grid paper. 

In this Slide Show, we show how to construct the perpendicular bisectors of the three sides of a triangle to show they intersect at a single point. This presentation requires the use of the TI-Nspire iPad App. Note: the download is a PPT.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.

This collection of clip art images includes image sequences for key topics in geometry This includes points, lines, planes, angles, triangles, quadrilaterals, and polygons. Each sequence of images provides an overview of the topic.