12. She could label it "Polygons with at least one right angle."
13. Draw two vertical lines that cut the rectangle into three vertical sections that are all about the same size (since the horizontal line is already drawn, there will be six sections). The lines should be about 1/3 and 2/3 of the way through the rectangle.
14. Choices B and C. a is parallel to c and b is parallel to d.
Option C. Please mark me as brainliest.
X-intercept : -9 (-9,0)
y-intercept: 3 (0,3)