Eight figures are below. Which ones are convex polygons?
The figures that are convex poygons are B, C, D, F, G, and H.
![[asy] size(0,8cm);draw((0,0)--(8,0)--(8,4)--(0,4)--cycle,black+2);draw((2,0)--(2,4),black+1);draw((4,0)--(4,4),black+1);draw((6,0)--(6,4),black+1);draw((0,2)--(8,2),black+1);label(](/api/ssl-img-proxy?src=https%3A%2F%2Flatex.artofproblemsolving.com%2F1%2F5%2Fe%2F15e286a9662baf900dc6f0fdea437870f6c2cc2b.png)
