Answer:
Igneous, Sedimentary & Metamorphic.
Explanation:
The main similarity between Igneous, Sedimentary & Metamorphic is that they are all rocks. These rocks are formed from a number of common type of minerals. One similarity between igneous rock and metamorphic rock, is that they are formed under very high temperatures. The difference between metamorphic rocks and sedimentary rocks is that metamorphic rocks are created from heat and pressure and sedimentary rocks are formed from compaction.
