One diagonal of a parallelogram has endpoints at p(-2, 5) and r(1, -1). the other diagonal has endpoints at q(1,5) and s(-2,-1). what type of parallelogram is pqrs? explain

  Rectangle

Step-by-step explanation:

It can help to plot the points on a graph.

Points P and Q have the same y-coordinates (5), so are on the same horizontal line. Points P and S have the same x-coordinates (-2), so are on the same vertical line. The sides of this parallelogram are perpendicular to each other, so it is a rectangle.

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Analytically, you can find the lengths of the diagonals. The vector PR has coordinates R-P = (1-(-2), (-1-5)) = (3, -6), so will have length √(3²+(-6)²) = 3√5. The vector QS has coordinates S-Q = (-2-1, -1-5) = (-3, -6), so will have length √((-3)²+(-6)²) = 3√5.

When the diagonals of a parallelogram have the same length, it is a rectangle. (These vectors are not at right angles to each other, so the rectangle is not a square.)

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees