Level 3
The figure is made up of two squares and a triangle. The ratio of the area of Triangle X to that of Square Z is 11 : 1. The ratio of the shaded area to that of the unshaded area is 1 : 3. If the difference between areas of Triangle X and Square Y is 464 cm2, what is the area of Square Z?
3 m
Level 1
In the figure, ABC is an equilateral triangle and ∠BCD = 80°. Find ∠z.
2 m
Level 2
Find the area of the figure.
2 m
Level 2
A square piece of paper is folded as shown in the figure.
  1. Find ∠ADE.
  2. Find ∠EDC.
2 m
Level 2
The figure shows a rectangular piece of paper folded at corner C. Find ∠BAC.
2 m