Question

problem 3:
(first taught in
lesson 51)
complete this sentence with the best of the
choices given.
a ______ is a quadrilateral that has
exactly one pair of opposite sides parallel.
after you pick your answer press go.
a. triangle b. parallelogram
c. concave d. trapezoid
e. scalene

Explanation:

• A triangle has three sides, not four (quadrilateral), so option A is incorrect.
• A parallelogram has two pairs of opposite sides parallel, not one pair, so option B is incorrect.
• "Concave" is a property related to the shape's curvature (whether it caves in) and not a type of quadrilateral defined by the number of parallel side - pairs, so option C is incorrect.
• A scalene triangle (or in a more general sense, scalene is used for triangles) has all sides of different lengths and is not a quadrilateral type defined by parallel sides, so option E is incorrect.
• A trapezoid is defined as a quadrilateral with exactly one pair of opposite sides parallel.

Answer:

D. trapezoid