a. diagon 3. A quadrilateral is a parallelogram If both pairs of opposite sides are parallel and a. congruent b. complementary c. supplementary d. opposite 4. It is a quadrilateral if both pairs of opposite sides are parallel and congruent. a. polygon b. Octagon c. trapezoid d. parallelogram 5. A quadrilateral is a four-sided polygon. a. four b. five c. three d. two 6. These are quadrilaterals with exactly two pairs of opposite sides that are parallel a. polygon b. octagon c. trapezoid d. parallelogram 7. If a parallelogram has a right angle, then it has right angles and the parallelogram is a rectangle. a. four b. five C. six d. three 8. The of a rectangle are congruent. a. diagonals b. sides C. parallel d. none 9. Each diagonal of a rhombus bisects opposite a. sides b. pair c. angles d. none 10. Which of the following is an example of a parallelogram? a. square b. rectangle c. rhombus d. all _11. The length of the midline is half the length of the third side. a. Midline Postulate b. Midline Theorem Formula c. Midline Theorer 12. The states that the segment that joins the midpoints of two side allol to the third side and half as long as the third side of the trian
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3. A, If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. If one pair of opposite sides of a quadrilateral are parallel and congruent, then the quadrilateral is a parallelogram.
4. D, One special kind of polygons is called a parallelogram. It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC).
5. A ,A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. The five most common types are the parallelogram, the rectangle, the square, the trapezoid, and the rhombus.
6. D, Parallelogram: A quadrilateral with 2 pairs of parallel sides.
7. C, 1 Answer. Yes, a parallelogram with a right angle has all right angles and is a rectangle.
8. D, Opposite sides of a rectangle are the same length (congruent). The angles of a rectangle are all congruent (the same size and measure.) Remember that a 90 degree angle is called a "right angle." So, a rectangle has four right angles. Opposite angles of a rectangle are congruent.
9. C, The opposite sides of a rhombus are parallel. The opposite angles of a rhombus are equal. The diagonals of a rhombus bisect each vertex angle. The diagonals of a rhombus bisect each other at right angles.
10.D, Few examples of a parallelogram are rhombus, rectangle, and square.
11. Midsegment Theorem, The Midsegment Theorem states that the midsegment connecting the midpoints of two sides of a triangle is parallel to the third side of the triangle, and the length of this midsegment is half the length of the third side.Feb 24, 2012