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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apec
Intercepts in 3D
seo tool
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object on vertical circle
Diagonals Quadrilateral
Start, Copy Segment
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Angles
Dilation
Inequalities
Curve Sketching
Power Functions