Answer:
A. Right Angle - an angle of 90°, as in a corner of a square or at the intersection of two perpendicular straight lines.
EB. Linear Pair - A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
C. Rhombus - a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
D. Parallelogram - a four-sided plane (shape/figure) rectilinear figure with opposite sides parallel.
E. Complementary Angles - either of two angles whose sum is 90°.
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