Cyclic quads

Author:Stephen Sproule

CDEF is a cyclic quadrilateral Move point C to find a relationship between angles D and F. (You may need to study this for a while.) By moving point C does the relationship between angles C and E change?

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Slope Between 2 Points (Phase 2)
seo tool
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Superellipse
Area of a Circle Illustrated

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Grid 1 scale
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Corresponding Angles: Quick Investigation
dfghj
Playing with Probability: IM Geo.8.2

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Cosine
Hyperbola
Reflection
Special Points
Tree Diagrams