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OpenStudy (anonymous):
A book shelf in a library has a shelf separator which is slanted, as shown. The upper and lower surfaces of the shelf are parallel. Which statement best describes angles t and r? t = r t = 180° - r t = 2r t = 90° - r
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Directrix (directrix):
>>which is slanted, *as shown.* @Rockylovesjj I can't see it.
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