A parallelogram has vertices A(0, 4), B(2, 2), C(4, 4), and D(2,6). Is this parallelogram a square? Explain why or why not.

If we take the adjacent side AD and DC  and work out their slopes we get 

AD = (6-4)/(2-0)  = 1 and DC has slope (6-4)/(2-4)  = -1 . This shows that the angle between the 2 lines is 90 degrees so it looks like  this is a square.

Step-by-step explanation:

A square is a special parallelogram that has 4 congruent sides and 4 right angles. Using the distance formula, you can prove that all 4 sides have a length of the square root of 8. This proves the parallelogram is a rhombus. Next, find the slope of all 4 sides.  The slopes of sides AB and CD are –1, and the slopes of sides BC and DA are 1. Since adjacent sides have opposite reciprocal slopes they are perpendicular and form right angles. This proves that parallelogram ABCD is a square.

Step-by-step explanation:

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22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.

step-by-step explanation:

milk=16 large

soda=280 kids

juice box=82 regular

63 soda +63 regular

124 large total