Four right triangles with distinct integer hypotenuses are put together to form a quadrilateral, as shown in image.
What's the smallest possible perimeter of this quadrilateral?
Note: Legs of the triangles need not to be integers.
Nine marbles are arranged in the image below. Can you slide two marbles to form a square?
From a square with sides of length 5 cm, triangular pieces from the four corners are removed to form a regular octagon.
Find the area removed?
The nine Horses are square fenced as shown in the picture below. By constructing just two square fences can you make sure that two Horses cannot meet each other without crossing the fence?
Seven circles, each with radius 1, overlap to form the composite figure shown below. Find the area of shaded region?