Relative proportions are preserved under normal projection.
Before projecting, consider a point on the arc of the inscribed circle. What relationship exists between the rhombus sides and altitudes?
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[i]Ellipse inscribed in a parallelgoram[/i]
1. Circle inscribed in a rhombus: [url]http://www.geogebratube.org/material/show/id/114514[/url]
[b]→2. Rhombus & circle, 2[/b]
3. Solution
