Identify the true statement.
O Crystals can be a variety of geometric shapes, including cubes, trapezoids, pyramids, octahedrons, hexagons, columns, blades, and needles.
O The angle of intersection between comparable faces of a crystal can change if the crystal is particularly small.
O Negative ions are called cations and have more protons than electrons; positive ions are anions and have more electrons than protons.
O There is an angle of 45∘ between each crystal face of the hexagonal column of a quartz crystal.