Final answer:
Based on height calculations of Homo erectus fossils, their average height was tall, with males about five feet nine and females about five feet three, similar to modern human heights.
Step-by-step explanation:
Physical anthropologists estimate that, based on the height calculations of Homo erectus fossils, their average height was tall, with males about five feet nine and females about five feet three. Homo erectus showed similarities in size to modern humans, sometimes reaching just over six feet, and made significant advancements such as the use of fire, construction of shelters, and the development of more sophisticated stone tools. While they had a prominent brow and a nose that pointed downward, their skeletal structure, including a broader pelvis and longer legs, allowed for bipedal locomotion nearly as efficient as modern humans.