What do a entrusive ingneous look like?
I think it is "extrusive Igneous rock". Well, the magma,the hot
liquid earth material which flows out through a vent(ways or cracks
in the earth's crust), if on coming over to the surface of the
earth, cools or solidifies, it is called "extrusive rock".
If the magma, cools before coming over to the surface of the
earth it is called "intrusive rock". the rocks formed this way are
generally Igneous rocks.
More detailed answer may follow.