”Composition Lesson” is an education method in education of basic design which was devised by Kinoshita who is one of author. A characteristic of method about this education is that has various evaluation items. One of important items about “Composition Lesson” is balance on a ratio of area on “Figure and Ground”. It has re-ported that apparent sizes of geometric shape are changed by influenced of its angle. However, apparent sizes of geometric shape in a frame have not been investigated until now. Therefore, we conducted a psychological experiment on the effect of figure angle changes to apparent sizes of figure arranged in the center of a rectangle frame. We used paried comperation and magunitude estimation. As a result, influence of V-H optical illusion and spannung was suggested.