How many triangles are there in the following figures?

Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 26.
| Understanding |
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26 triangles: ABC, ACD, ABD, CDK, BCK, BDK, DKL, DLE, DKE, KLF, ELF, KEF, HIJ, HJG, IHG, BHK, HKF, BHF, BDF, DHF, DBH, DKF, DEF, AKE, ABK, ADK. |
