BOUNDARY

Definition of Boundary

Boundary is a border that encloses a space or an area.

More About Boundary

    The distance around the boundary is called as �perimeter�.

Video Examples: What Is a Boundary Line in Graphing?


Example of Bisector of a Line

  • The length of the three sides of a triangular field is 9 m, 5 m, and 11 m
  • The boundary or perimeter of the field is given as 9 m + 5 m + 11 m = 25 m

Solved Example on Boundary

Ques: A gardener wants to plant 4 plants per meter along the boundary of a garden, which is represented by the quadrilateral ABCD shown in the figure. Calculate the number of plants required.

    Choices:
    A. 75
    B. 80
    C. 70
    D. 60
    Correct Answer: B

Solution:

    Step 1: Perimeter of the quadrilateral ABCD = Sum of the four sides of the quadrilateral.
    Step 2: = AB + BC + CD + DA
    Step 3: = 3 + 8 + 4 + 5 = 20 meters [Substitute AB = 3, BC = 8, CD = 4, and DA = 5 and simplify.]
    Step 4: The number of plants required = 20 � 4 = 80.

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