question: parallelogram:rectangle:square
choices.label: A B C D
choices.text: point:line segment:triangle triangle:isosceles triangle:equilateral triangle line segment:triangle:quadrilateral line:plane:space
explanation: "square" is a kind of "rectangle" and the "rectangle" is a kind of "parallelogram" a "line segment" is not a type of "point", and a "triangle" is not a type of "line segment". an "equilateral triangle" is a kind of "isosceles triangle", and an "isosceles triangle" is a kind of "triangle" a "quadrilateral" is not a type of "triangle", nor is a "triangle" a type of "line segment". "space" is not a type of "plane", and "plane" is not a type of "line".
relation: parallelogram rectangle R2.2
relation: rectangle square R2.2