Forum Thread: How to Calculate the Measure of an Inscribed Angle.

Video covers four Theorems that pertain to Inscribed angles . The four Theorems are as follows.
Theorem: The measure of an inscribed angle is one half the measure of its intercepted arc

Theorem: If two inscribed angles of a circle intercept the same arc, then the angles are congruent

Theorem: If a right angle is inscribed in a circle, then the hypotenuse is a diameter of the circle.

Conversely if one side of an inscribed triangle is a diameter of the circle then the triangle is a right angle and the angle opposite the diameter is the right angle.

Theorem: A quadrilateral can be inscribed in a circle if and only if its opposite angles are supplementary.

Circles: Tangents,Secants,Chords

Circles: Tangents,Secants,Chords Investigate circles,tangent, secants, and chords Each lesson includes worksheets and videos.

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