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  • Question

  • Find the number of triangles in the given figure.

    Find the number of triangles in the given figure. 16 18 19 21 The figure may be labelled as shown. T


  • Options
  • A. 16
  • B. 18
  • C. 19
  • D. 21

  • Correct Answer
  • 21 

    Explanation
    The figure may be labelled as shown.

    Find the number of triangles in the given figure. 16 18 19 21 The figure may be labelled as shown. T

    The simplest triangles are EFH, BIC, GHJ, GIJ, EKD and CKD i.e. 6 in number.

    The triangles composed of two components each are ABJ, AFJ, GCK, GEK, CED arid GHI i.e. 6 in number.

    The triangles composed of three components each are GCD, GED, DJB and DJF i.e. 4 in number.

    The triangles composed of four components each are ABF and GCE i.e. 2 in number.

    The triangles composed of five components each are ABD and AFD i.e. 2 in number.

    There is only one triangle i.e. FBD composed of six components.

    Total number of triangles in the figure = 6 + 6 + 4 + 2 + 2 + 1 = 21.

    More questions

    • 1. What do you understand by - 'If K is there L has to be there'

    • Options
    • A. K & L will always be together
    • B. K is not there, then L will not be there
    • C. k is there, then L will also be there
    • D. K & L will always be not together
      • Discuss
    • 2. If white is called black, black is called red, red is called yellow, yellow is called green, green is called blue, blue is called violet and violet is called orange, what would be the colour of human blood?

    • Options
    • A. green
    • B. black
    • C. red
    • D. yellow
      • Discuss
    • 3. Pankaj is taller than Vinod, who is shorter than Pramod. Usha is taller then priyanka but shorter than Vinod. Pramod is shorter than Pankaj. Who is the tallest?

    • Options
    • A. Priyanka
    • B. Pramod
    • C. Vinod
    • D. Pankaj
      • Discuss
    • 4. P, Q, R and S are four friends. P is shorter than Q but taller than R who is shorter than S. Who is the shortest among all?

    • Options
    • A. P
    • B. Q
    • C. R
    • D. S
      • Discuss
    • 5. How many blocks in a mile?

    • Options
    • A. 8 - 12
    • B. 12 - 15
    • C. 8 - 15
    • D. 15 - 20
      • Discuss
    • 6. What does this symbol mean '&'?

    • Options
    • A. Caret
    • B. Bar
    • C. Ampersand
    • D. Reversed Caret
      • Discuss
    • 7. 8(6+5) - 10 =?

    • Options
    • A. 76
    • B. 78
    • C. 80
    • D. 82
      • Discuss
    • 8. How many lines of symmetry does a Pentagon have?

    • Options
    • A. 4
    • B. 5
    • C. 6
    • D. 0
      • Discuss
    • 9. A line is an undefined term because it

    • Options
    • A. contains an infinite number of points
    • B. can be used to create other geometric shapes
    • C. describes something that does not have width or depth
    • D. is a term that does not have a formal definition
      • Discuss
    • 10. From the given alternatives, select the word which CANNOT be formed using the letters of the given word. Demonstration

    • Options
    • A. Moon
    • B. Most
    • C. Train
    • D. Damage
      • Discuss

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