Right Pyramid

thingiverse

When the apex perfectly aligns directly above the exact center of its foundation base, it forms a Right Pyramid; however, if this alignment doesn't occur, then it becomes an Oblique Pyramid. A pyramid's three sides can be formed by creating a triangular base with side lengths measuring 13, 20 and 21 units. The point from which the height is measured originates within one of these triangle's vertices. Alternatively, a different triangular formation can be created using side lengths of 33, 41 and 58 units. Interestingly, this point where the height intersects lies completely outside the boundaries of the formed triangle itself.