Answer:
11. true
12. true
13. false
14. false
15. true
Explanation:
11. rectangle- a figure with four straight sides and four right angles, especially one with unequal adjacent sides.
parallelogram- a four sided figure with opposite sides parallel.
12. rhombus- a parallelogram with opposite equal angles and four equal sides. (usually acute and obtuse opposite equal angles but includes squares.)
13. square- a figure with four equal sides and four right angles
14. ^^ refer back to rectangle and rhombus definitions.
15. ^^refer back to definitions of rhombus, square and rectangle.