Mathematics
Grade9
Easy

Question

Write the matrix for the polygon.

  1. space space A    B    C
open square brackets table row 1 4 3 row 2 2 cell negative 2 end cell end table close square brackets
  2. space space space space A    B    C
open square brackets table row 1 4 3 row cell negative 2 end cell 2 cell negative 2 end cell end table close square brackets
  3. space space space A    B    C
open square brackets table row 1 4 3 row 2 cell negative 2 end cell cell negative 2 end cell end table close square brackets
  4. space space A    B    C
open square brackets table attributes columnalign left end attributes row 1 4 3 row 2 2 2 end table close square brackets

hintHint:

General matrix representation.

The correct answer is: space space A    B    C
open square brackets table row 1 4 3 row 2 2 cell negative 2 end cell end table close square brackets


    * Matrix representation is the efficient way for the transformation of points.
    * Every vertex is placed in columns.
    Given That:

    >>>From figure:
    The vertices of a given polygon are: A(1,2); B(4,2); C(3,-2).
    >>>Therefore, the matrix representation of the given polygon becomes:
    space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space A    B    C
M a t r i x space o f space t h e space p o l y g o n space equals open square brackets table row 1 4 3 row 2 2 cell negative 2 end cell end table close square brackets

    From the graph, the coordinates of polygon are A(1, 2), B(4, 2), and C(3, -2).
    space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space A    B    C
M a t r i x space o f space t h e space p o l y g o n space equals open square brackets table row 1 4 3 row 2 2 cell negative 2 end cell end table close square brackets

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