True love is not only complimentary but complementary. "You are so acute!" "So are you and in sum we are just right for each other because we add up to 90 degrees." When supplementary angles fall in love the bottom line is 180 degrees. "You love me even though I'm not acute. That's true love." Here is a tried-and-true poster that visually reminds students of the geometric difference between complementary and supplementary. Poster size: 19" by 25".