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Lots of points for correct answer!

Gina plotted the points (-3, 4), (4, 4), (-3, -2), and (4, -2) on the coordinate plane.





Determine the height of the quadrilateral. -

Determine the length of the quadrilateral. -

What shape do the points form?

What is the area of the quadrilateral?

What is the perimeter of the quadrilateral?

Lots of points for correct answer! Gina plotted the points (-3, 4), (4, 4), (-3, -2), and-example-1
User Kimbo
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1 Answer

22 votes
22 votes

Answer:

  • height: 6 units
  • length: 7 units
  • shape: rectangle
  • area 42 square units
  • perimeter: 26 units

Explanation:

Height

The height of it is the distance between the bottom and the top. You can count grid squares (6), or you can subtract y-coordinates:

4 -(-2) = 4 +2 = 6

The height of the figure is 6 units.

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Length

The length is the difference between the left side and the right side. Once again, you can count grid squares (7), or you can subtract x-coordinates:

4 -(-3) = 4 +3 = 7

The length of the figure is 7 units.

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Shape

The two upper points are on the same horizontal line, as are the two lower points. The two left-side points are on the same vertical line, as are the two right-side points. Vertical and horizontal lines are at right angles, so all of the corner angles are 90°. The quadrilateral is a rectangle.

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Area

The area of the quadrilateral is the product of its length and height:

A = LH

A = (7 units)(6 units) = 42 units²

The area is 42 square units.

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Perimeter

The perimeter is the sum of the lengths of the four sides. There are to sides that are 6 units long, and 2 sides that are 7 units long.

P = 2(6 +7) = 26

The perimeter is 26 units.

User Tedpac
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2.9k points