## TEKS-GEO-12C: Apply the proportional relationship between the measure of the area of a sector of a circle and the area of the circle to solve problems.

There are 11 resources.
Title Description Thumbnail Image

## Instructional Resource | Geometric Construction | Constructing an Egg Shape

Instructional Resource | Geometric Construction | An Egg Shape

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.

## Math Examples Collection: Circular Area and Circumference

<This collection aggregates all the math examples around the topic of Circular Area and Circumference. There are a total of 23 Math Examples.

## Closed Captioned Video: Geometry Applications: Circles, 2

Closed Captioned Video: Geometry Applications: Circles, Segment 2: Circles and Arcs.

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.

## Closed Captioned Video: Algebra Applications: Variables and Equations, 3

Closed Captioned Video: Algebra Applications: Variables and Equations, Segment 3: River Ratios

Why do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path?

## Video Transcript: Algebra Applications: Variables and Equations, Segment 3: River Ratios

Video Transcript: Algebra Applications: Variables and Equations, Segment 3: River Ratios

This is the transcript for the video of same title. Video contents: Why do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path?

## Formulas--Area of a Semi-Circle

Formulas--Area of a Semi-Circle

The formula for: Area of a Semi-Circle.

## Formulas--Area of a Sector of a Circle

Formulas--Area of a Sector of a Circle

The formula for: Area of a Sector of a Circle.

## Formulas--Area of a Quarter Circle

Formulas--Area of a Quarter Circle

The formula for: Area of a Quarter Circle.

## Formulas--Area of a Circle

Formulas--Area of a Circle

The formula for the Area of a Circle.

## VIDEO: Geometry Applications: Circles, 2

VIDEO: Geometry Applications: Circles, Segment 2: Circles and Arcs.

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.

## VIDEO: Algebra Applications: Variables and Equations, 3

VIDEO: Algebra Applications: Variables and Equations, Segment 3: River Ratios.

Why do rivers meander instead of traveling in a straight line? In going from point A to point B, why should a river take the circuitous route it does instead of a direct path?