Sneferu

Sneferu built the Bent Pyramid at Dahshur, named for its unusual change in angle from 54 to 43 degrees. This design change likely corrected structural instability, representing a transitional step toward the true pyramid form.

Sneferu built the Red Pyramid at Dahshur, the first successful true pyramid with smooth sides. It became the model for later pyramids, including those at Giza, and demonstrated mastery of pyramid construction.