Which is the largest of the terrestrial planets?

The largest of the terrestrial planets is Earth. Terrestrial planets, also known as rocky planets, include Mercury, Venus, Earth, and Mars. These planets are characterized by solid surfaces, as opposed to the gas giants.

Earth has a diameter of about 12,742 kilometers (7,918 miles), making it larger than the other terrestrial planets. Mercury is the smallest terrestrial planet with a diameter of about 4,880 kilometers (3,032 miles). Venus, while similar in size to Earth, has a diameter of approximately 12,104 kilometers (7,521 miles), which is still smaller than that of Earth. Mars has a diameter of about 6,779 kilometers (4,212 miles), making it significantly smaller than Earth as well.

By understanding the sizes of these planets, it becomes clear that Earth is the largest of the terrestrial group, both in terms of diameter and overall mass.