Which figure is a solid figure with a set of parallel cross-sections that are congruent rectangles? A Cube with cross-sections perpendicular to a face. B Cylinder with cross-sections parallel to the base. C Rectangular Prism with cross-sections diagonal from a vertex. D Triangular Prism with cross-sections perpendicular to the base.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

the answer is a.

step-by-step explanation:

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