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Two lines are drawn in the triangle: one from the top vertex to the middle of the base, and one from the bottom-left vertex to the middle of the right side. How many triangles are formed?

Competition practiceCounting Figures
  • A5
  • B6
  • C7
  • D8

Step-by-Step Solution

The two lines cross inside. Pieces: 2 small triangles; 1 triangle made of two pieces; 4 triangles that each use one whole line as a side (2 for each line); and the whole: .
Answer: D) 8

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