xkcd #3193: Sailing Rigs

xkcd #3192: Planetary Alignment

xkcd #3191: Superstition

xkcd #3190: Tensegrity

xkcd #3189: Conic Sections

xkcd #3188: Anyone Else Here

xkcd #3187: High Altitude Cooking Instructions

xkcd #3186: Truly Universal Outlet

xkcd #3185: Sauropods

xkcd #3184: Funny Numbers

xkcd #3183: Pole Vault Pole

xkcd #3182: Telescope Types

xkcd #3181: Jumping Frog Radius

xkcd #3180: Apples

xkcd #3179: Fishing

xkcd #3178: Hyperacute Interdynamics

xkcd #3177: Chessboard Alignment

xkcd #3176: Inverted Catenaries

xkcd #3175: Website Task Flowchart

xkcd #3174: Bridge Clearance