Math Problem Statement

Graph the image of ∆KLM after a rotation 180° clockwise around the origin.

Solution

To solve this problem, we need to rotate the triangle ΔKLM\Delta KLM 180° clockwise around the origin.

For a 180° clockwise rotation about the origin, the coordinates of any point (x,y)(x, y) will transform into (x,y)(-x, -y).

Here are the steps:

  1. First, find the coordinates of points KK, LL, and MM from the graph:

    • K=(7,8)K = (-7, -8)
    • L=(2,8)L = (2, -8)
    • M=(1,5)M = (-1, -5)
  2. Apply the 180° rotation rule (x,y)(x,y)(x, y) \rightarrow (-x, -y):

    • K(7,8)(7,8)K(-7, -8) \rightarrow (7, 8)
    • L(2,8)(2,8)L(2, -8) \rightarrow (-2, 8)
    • M(1,5)(1,5)M(-1, -5) \rightarrow (1, 5)
  3. Plot the new points:

    • K=(7,8)K' = (7, 8)
    • L=(2,8)L' = (-2, 8)
    • M=(1,5)M' = (1, 5)

The image of the triangle ΔKLM\Delta KLM after a 180° clockwise rotation is now at the new points.

Would you like a detailed diagram or further clarifications?

Here are 5 related questions to explore further:

  1. How does the transformation rule change for a 90° rotation?
  2. What are the effects of a reflection over the x-axis for triangle ΔKLM\Delta KLM?
  3. How do rotations of different angles (e.g., 270°) affect the coordinates of points?
  4. What is the significance of rotating around a point other than the origin?
  5. Can you describe the properties of a 180° rotation in terms of distance and orientation?

Tip: A 180° rotation is equivalent to reflecting the figure twice—once over the x-axis and then over the y-axis.

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Math Problem Analysis

Mathematical Concepts

Geometry
Transformations
Coordinate Plane

Formulas

Rotation formula for 180°: (x, y) → (-x, -y)

Theorems

Rotation Theorem
Properties of 180° rotation

Suitable Grade Level

Grades 8-10