The interactive tutorial examines the properties of central and inscribed angles intercepting a common arc in a circle. Learners use the applet to find central and inscribed angles.

This site from Mathworld.com provides a detailed overview of pi. Content includes a diagram, an analysis of its value, how and when pi crops up in mathematics, historical references to pi, and more.

Learn all about the basic properties of a cone. This lesson targets the formula, volume, parts, and shapes of a cone and has interesting solved examples and practice questions.

This online calculator will calculate the various properties of a cylinder given 2 known values. It will also calculate those properties in terms of PI.

This site introduces the iteration of circle inversions and describes the associated properties.

This task provides a good opportunity to use isosceles triangles and their properties to show an interesting and important result about triangles inscribed in a circle with one side of the triangle a diameter. The fact that these...

Learn all about the basic properties of central angles. This lesson targets what is a central angle, central angle formula, central angle calculator, theorem of central angle, how to find central angles, and how to apply them while...

Solve three challenging problems that apply properties of inscribed shapes to find an arc length or a missing angle.

This is a proof problem, considered a "three star" geometry problem requiring knowledge of proofs and properties of circles to solve this problem with cables in duct problem.

This is a "three star" geometry problem requiring knowledge of proofs and properties of circles. Students will use the given definition of radical axis and prior knowledges to prove a way to find a radical axis.

Learn about the properties of 2-D shapes: circles, triangles, polygons, and quadrilaterals. Includes information, video, and examples about each, with games and quizzes for reinforcement.

Learn how the components and properties of a sphere are analogous to those of a circle.

The purpose of this task is to explore reflections in the context of paper folding. Each fold is associated with a line of reflection and understanding each step in the construction requires careful analysis of angles and of the...

Do you need practice remembering or learning different geometry vocabulary words and definitions? This matching game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...

Students learn to identify real numbers as rational numbers and irrational numbers. They review rational numbers as repeating decimals, and irrational numbers as non-repeating decimals. They also review commutative, associative,...

MathWorld goes into detail about equilateral triangles at this site. Use this site to find out how to construct an equilateral triangle using a compass and straight edge. Learn about the altitude of such triangles, and the rationality of...

This site introduces the iteration of circle inversions and describes the associated properties.

This site introduces the iteration of circle inversions and describes the associated properties.

The Cultural Sites of Al Ain (Hafit, Hili, Bidaa Bint Saud and Oases Areas) constitute a serial property that testifies to sedentary human occupation of a desert region since the Neolithic period with vestiges of many prehistoric...

Solve two problems that apply properties of tangents to determine if a line is tangent to a circle.

Solve two problems that apply properties of tangents to determine if a line is tangent to a circle.

Solve two challenging problems that apply properties of tangents to find the radius of a circle with a tangent.

Solve two challenging problems that apply properties of tangents to find the perimeter of a circumscribing shape.

This online calculator will calculate the various properties of a right circular cone given any 2 known variables.