The graph of f ′(x) is continuous and increasing with an x-intercept at x = 5. Which of the following statements must be true?
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<h2>★<u>Answer</u></h2>
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- The properties of trapezoid apply by definition (parallel bases).
- The legs are congruent by definition.
- The lower base angles are congruent.
- The upper base angles are congruent.
- Any lower base angle is supplementary to any upper base angle.