How many triangles can be formed with 6 matchsticks of equal size without breaking or overlapping them?
4 triangles if you arrange them in 3 dimension like a pyramid.
<START_INST>How many triangles can be formed with 6 matchsticks of equal size without breaking or overlapping them?<END_INST><START_CTX><END_CTX><START_A>4 triangles if you arrange them in 3 dimension like a pyramid.<END_A>