Math Problem Statement

In 1–2 sentences, identify what composition transformation maps ΔABC to ΔA''B''C''.

Solution

The image shows two triangles on a coordinate plane. The transformation from triangle ABC\triangle A B C to ABC\triangle A'' B'' C'' is requested. Here's how we can approach this:

Step 1: Identify the coordinates

  • For ABC\triangle A B C:

    • Point A=(3,5)A = (-3, 5)
    • Point B=(1,1)B = (-1, 1)
    • Point C=(4,3)C = (-4, 3)
  • For ABC\triangle A'' B'' C'':

    • Point A=(5,3)A'' = (5, 3)
    • Point B=(7,1)B'' = (7, -1)
    • Point C=(4,1)C'' = (4, 1)

Step 2: Determine the transformation

The sequence of transformations includes:

  1. Translation: It appears the triangle was moved from the left to the right across the coordinate plane. To verify this, look at the distance between a corresponding point on both triangles (e.g., from AA to AA''):

    • A=(3,5)A = (-3, 5) and A=(5,3)A'' = (5, 3)
    • The translation rule seems to be T(x,y)=(x+8,y2)T(x, y) = (x + 8, y - 2), as (3+8,52)=(5,3)(-3 + 8, 5 - 2) = (5, 3).
  2. Rotation: The triangle appears to have been rotated. The exact angle of rotation can be determined by comparing the orientation of the triangles. Based on visual analysis, it seems like a 90-degree clockwise rotation around the origin may have occurred.

Step 3: Transformation summary

The composite transformation from ABC\triangle A B C to ABC\triangle A'' B'' C'' involves:

  1. A 90-degree clockwise rotation around the origin.
  2. A translation by the vector 8,2\langle 8, -2 \rangle.

Would you like a more detailed explanation or have any questions on the process?


Here are five related questions for further exploration:

  1. What is the matrix representation of a 90-degree clockwise rotation?
  2. How do you determine the center of rotation when not given explicitly?
  3. What would happen if we applied a reflection instead of a rotation to ABC\triangle ABC?
  4. How does a translation affect the area of a geometric shape?
  5. How do you find the distance between two points after a transformation?

Tip: When performing a composite transformation, always apply the transformations in the correct order—rotations first, then translations.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Transformations
Translations
Rotations

Formulas

Translation Formula: T(x, y) = (x + a, y + b)
Rotation Formula: 90-degree clockwise rotation around the origin

Theorems

Transformation Theorem
Rotation Theorem

Suitable Grade Level

Grades 9-12