Recreational Math Problems
From Huben's Wiki
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| − | * In the diagram below, d is a corner of a solid where three sides meet at right angles. | + | * In the diagram below, d is a corner of a solid where three sides meet at right angles. Is angle gef obtuse, right, or acute? Under what conditions would it be any of those? Compare to angle egb for ideas. |
[[File:A-Prism-Cut-By-An-Oblique-Plane.jpg|alt text]] | [[File:A-Prism-Cut-By-An-Oblique-Plane.jpg|alt text]] | ||
