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11PLSS NEED HELP.........

11PLSS NEED HELP.........-example-1
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1 Answer

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5 votes

Answer:

diagonal measure(s)

Explanation:

Opposite sides are the same length for any parallelogram, as suggested by the line drawing at the upper right of your figure. The figure will be a parallelogram only if the angles are right angles.

You can check to see if the angles are right angles in two ways:

1. see if the diagonal satisfies the Pythagorean theorem. The sides and diagonal will satisfy the Pythagorean theorem only if the corner angle is a right angle. A parallelogram with a right angle is a rectangle.

d² = 30² +72² = 900 +5184 = 6084

d = 78

2. see if the diagonals are the same length. Diagonals of a parallelogram are the same length if and only if the figure is a rectangle.

One or both diagonal measures will tell you if the stakes mark a rectangle.

User Schonfinkel
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