Kumar Ankit, an engineering student from India, posted this geometric puzzle to Quora.com. People use this question-and-answer site to get responses for their inquiries but it can also be a good place to find fun brainteasers.
Can you find all the triangles hidden in this image? An eye for detail and some knowledge of geometry may help you solve Ankit's brainteaser. Good luck and happy hunting!
Need a hint? The triangles can overlap!
The answer is 25! There are 24 in the entire shape and the 25th triangle is in the artist's signature.
Luckily, mathematician Martin Silvertant created a diagram that easily explains where all 24 triangles are located in the figure. He posted the photo below in the comments section of the original post.
P.S. You can use Inspirograph to create your own fun geometric shapes. This site is an online spirograph simulator.