How many triangles are there in the following figure?
2025
How many triangles are there in the following figure?
Answer: C. 13 — Counting by groups: Basic triangles: 4 inside the rectangle, 1 at the top-left, and 1 at the right = 6. Combined triangles: 4 larger triangles formed inside…
- A.
11
- B.
12
- C.
13
- D.
More than 13
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Correct answer: C
Counting by groups:
Basic triangles: 4 inside the rectangle, 1 at the top-left, and 1 at the right = 6.
Combined triangles: 4 larger triangles formed inside the rectangle by combining adjacent small triangles, plus 2 larger side triangles = 6.
Outer triangle: The complete boundary triangle = 1.
Total: 6 + 6 + 1 = 13
Final answer: Option C
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