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1b. No because they have different slopes

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1b. No because they have different slopes

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1a.Yes because opposite sides are parallel 

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1a.Yes because opposite sides are parallel 

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2b.   no, because the sides are not congruent 

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2b.   no, because the sides are not congruent 

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I found the distance between the two points and either multiplied them for area or added them all for perimeter.

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It is a rhombus because it has four congruent sides and opposite congruent angles.

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2a. Yes, because all 4 sides are 90 degrees, and it has 2 equal pairs

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2a. Yes, because all 4 sides are 90 degrees, and it has 2 equal pairs

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2a: It is a rectangle because it has 4 right angles.

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It's not a rhombus because it doesn't have 4 congruent sides and and it doesn't have 2 parallel sides :)

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2b. No, it is a parallelogram and has opposite congruent angles.

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2b. No, because all sides are equal and on a rectangle, the sides across from each other are equal, not all of them

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2b. No, because all sides are equal and on a rectangle, the sides across from each other are equal, not all of them

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2c. 28; 42.8

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It is because there are 2 sets of parallel lines
AB and DC both have a slope of 0/-6
AD and BC both have a slope of 4/2

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3a. No, it has opposite congruent sides.

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No because they only have one pair of parallel sides meaning the slopes aren't the same

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ABCD= 28
EFGH = 36

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3b. No, it does not have have all 4 sides being congruent, nor are they opposite congruent sides.

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The area for ABCD is 18 and because EFGH is not a rhombus we did not find out the area ;)

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3c. -36.5; 10