Visual Math - Circles | Geometry Applications

Circles

A central angle is an angle AOB with endpoints A and B located on a circle's circumference and vertex O located at the circle's center.

Theorems About Inscribed Angles

Measures of the inscribed angles intercepting the same arc are equal.

Theorems About Tangent Chord Angle

Measure of the inscribed angle and measure of the tangent chord angle intercepting the same arc are equal.

Inscribed Angle In a Circle

An inscribed angle is an angle APB formed by points A, P, and B on the circle's circumference.

Tangent Chord Angle

The angle formed by a tangent to a circle and a chord is called tangent chord angle.

Interior Angle In A Circle

An interior angle formed by two intersecting chords has a measure that is the average of the intercepted arcs.

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