In our solar system, the inner four planets, Mercury, Venus, Earth, and Mars, are referred to as rocky, or terrestrial ("Earth-like").
Outside the solar system it is estimated as many as 40 billion planets in our galaxy alone would be similar to Earth.
Mars has a very similar angle of axial tilt to Earth.
Venus and Earth
they are all small rocky planets [earth,mercury,venus,mars]
The four inner, terrestrial or rocky planets all have similar densities, much higher than the four outer gas giant planets (though the outer planets are much larger and more massive).
Earth and Mars, along with Mercury and Venus, are rocky planets.
mars
Mars is the only planet that has four similar seasons to Earth's.
in term of shape
It's atmosphere is similar like ours on earth
Astronomers have found Earth-sized planets in other solar systems.
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
Mars is very similar to Earth. Mars' year and day are very similar to Earth compared to other planets.
Venus and earth.
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.
No planets are similar but there is a moon. Titan, one of Jupiter's moons, is very similar to Earth.
All inner planets are made of rock. (Earth, Mars, Venus, and Mercury)