Answer: YES
Explanation:It’s important to understand that there are two different meanings of the term idealism in philosophy.
The first is Platonic idealism (or Idealism). This is based on Plato’s Theory of Forms, which holds that all material things instantiate immaterial Forms (or Ideals) that exist outside time and space. Classic examples of Forms include numbers (like ‘two’ or ‘twoness’), relations (like ‘is-greater-than’) and geometric shapes (e.g., a triangle).
Unlike material things, Forms are perfect. We can never find an exact equilateral triangle in the material world; yet the Form of an equilateral triangle does have three exactly equal sides. Importantly, Platonic idealism does not deny the reality of material objects; it merely says that Forms are more real, because they are perfect and eternal.
Plato is especially concerned with the Forms of things like Truth, Beauty, Virtue and Goodness — or what we might call moral Forms.
The second meaning of idealism is associated with philosophers like Berkeley. This asserts — as another answer has already explained — that material objects are not real at all, but that all reality is immaterial or mental. This can be also called immaterialism or psychism.
