Math Problem Statement

HLJK is a parallelogram because the midpoint of both diagonals is ________, which means the diagonals bisect each other.

Solution

The problem asks to determine why shape HJKL is a parallelogram, specifically by finding the midpoint of both diagonals, which confirms that the diagonals bisect each other.

Step 1: Identify the Coordinates

The vertices of the parallelogram are:

  • H(-2, 2)
  • J(4, 5)
  • K(-2, -5)
  • L(4, -2)

Step 2: Find the Midpoint of Diagonals

The midpoints of diagonals are calculated using the midpoint formula:

Midpoint=(x1+x22,y1+y22)\text{Midpoint} = \left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right)

Midpoint of Diagonal HJ and KL:

  1. Diagonal from H to L:

    • Points: H(-2, 2) and L(4, -2)

    • Midpoint:

      (2+42,2+(2)2)=(1,0)\left(\frac{-2 + 4}{2}, \frac{2 + (-2)}{2}\right) = \left(1, 0\right)

  2. Diagonal from J to K:

    • Points: J(4, 5) and K(-2, -5)

    • Midpoint:

      (4+(2)2,5+(5)2)=(1,0)\left(\frac{4 + (-2)}{2}, \frac{5 + (-5)}{2}\right) = \left(1, 0\right)

Since both midpoints are (1,0)(1, 0), the diagonals bisect each other, confirming that HJKL is a parallelogram.

Answer

The correct option is C: (1, 0).

Would you like further details or have any other questions?

Related Questions

  1. How can you verify if a quadrilateral is a parallelogram using slope?
  2. How do you calculate the distance between two points on a coordinate plane?
  3. What is the significance of diagonals bisecting each other in a parallelogram?
  4. How can the properties of midpoints help determine the types of quadrilaterals?
  5. What are the other ways to prove that a quadrilateral is a parallelogram?

Tip

Always double-check your midpoint calculations to ensure the diagonals' bisecting point is correct, confirming the properties of geometric shapes.

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Math Problem Analysis

Mathematical Concepts

Geometry
Coordinate Geometry
Parallelograms

Formulas

Midpoint formula: (x1 + x2)/2, (y1 + y2)/2

Theorems

If the diagonals of a quadrilateral bisect each other, the quadrilateral is a parallelogram.

Suitable Grade Level

Grades 8-10