Three squares are placed as shown. Given that the green areas are equal, what is the side length of the orange square?
Categories
New Year 2021
Category: Beginner
Categories
An Italian hill
Two semicircles inside a rectangle. What is the proportion of the red to the green area?
Categories
The radio telescope
A square contains two triangles. What fraction of the square do they cover?
Categories
The warning triangle
An equilateral triangle contains three congruent rectangles. Two distances on its base are given. What fraction is white?
Categories
The tumbler doll
A circle within an equilateral triangle within a circle. What fraction is shaded?
Categories
The green kimono
An equilateral triangle and three squares. What’s the angle?
Categories
The circus tent
A regular octagon is coloured as shown. What fraction of its area is red?
Categories
The windshield wipers
A square and two rectangles, connected by two circular arcs, form a square. What is the proportion of the orange to the green area?
Categories
The square peg
A square is fitted into an equilateral triangle as shown. What fraction is shaded?
Categories
The velocipede
Two circles are embedded in a frame of size 9 x 8. What is their total area?