In theory there are thousands, but because of limitations to our current technology we haven't found any.
Earth has no planets of its own. It is one and has one moon.
the answer is Venus, and Earth
They are called the terrestrial planets because they are similar to Earth (in fact one of them is Earth.
The inner planets are also known as terrestrial planets. This term is used because they have solid rocky surfaces similar to Earth's.
Venus and Earth have similar compositions, both being terrestrial planets with rocky surfaces. They also have similar densities, indicating similar compositions of silicate rock and metal elements.
Astronomers have found Earth-sized planets in other solar systems.
No planets are similar but there is a moon. Titan, one of Jupiter's moons, is very similar to Earth.
mars
in term of shape
It's atmosphere is similar like ours on earth
If by gas you mean an atmosphere, there are no planets with an atmosphere anywhere similar to Earth.
Inner planets are rock with minerals similar to those on Earth
Venus is most similar in size and mass to Earth. Both planets are considered terrestrial planets and have similar compositions and densities, which is why they are often referred to as "sister planets."
Mars is very similar to Earth. Mars' year and day are very similar to Earth compared to other planets.
Earth and Mars are both terrestrial planets. Both planets have about the same amount of dry land surface areas. Mars, like Earth, has volcanoes, canyons, and impact craters.
All inner planets are made of rock. (Earth, Mars, Venus, and Mercury)
Earth has no planets of its own. It is one and has one moon.