Weekly Problem 27 - 2013
The diagram shows a parallelogram inside a triangle. What is the value of $x$?
Weekly Problem 29 - 2008
The seven pieces in this 12 cm by 12 cm square make a Tangram set. What is the area of the shaded parallelogram?
Four rods, two of length a and two of length
b, are linked to form a kite, as shown in the diagram. The
linkage is moveable so that the angles change. What is the maximum
area of the kite?
Now suppose the four rods are assembled into a linkage which
makes a parallelogram. What is the maximum area of this