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Geometry 12.4b, Inscribed Triangle, Inscribed Quadrilateral, & two theorems

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Mathematics

An explanation of our first theorem which says an inscribed angle subtends a semicircle if and only if the angle is a right angle, a review of the meaning of subtend, we find angle measures in inscribed triangles. An explanation of the second theorem which says if a quadrilateral is inscribed in a circle, then it’s opposite angles are supplementary. We find angle measures of an inscribed quadrilateral, we find the value of y in an algebraic angle measure. We discuss how we know if a segment is a diameter of a circle or not by whether it goes through the center point.

Geometry 12.4a, Inscribed angle, Intercepted arc, Subtends
https://youtu.be/HR96bkdM2Dg

High School Geometry Playlist
https://www.youtube.com/playlist?list=PLKi4WTp6PRGVBM1nPhwW1lTuxi32Q0IZ3

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