関連ワード:
are all angles of a rectangle equal all angles of a rectangle are equal true or false does all the angles of a rectangle are equal all angles of a rectangle are equal or not are angles of a rectangle equal are opposite angles of a rectangle equal are adjacent angles of a rectangle equal all the angles of a rectangle are equal to 90 degree prove that all angles of a rectangle are equal all four angles of a rectangle are equal and measure 90 each
