How many triangles can you see? Puzzle divides the internet

By Mark Molly

Daily Telegraph UK·

8 Dec, 2016 08:17 PM2 mins to read

Puzzle: How many triangles can you see? Photo / People's Daily China Twitter

Can you work out this tricky triangle puzzle?

A riddle posted by People's Daily China has divided online opinion, but is there a definitive answer to the question?

They tweeted: "How many triangles can you see in this image? It is said that only those with IQ 120 or above can find 18 triangles."

How many triangles can you see in this image? It is said that only those with IQ 120 or above can find 18 triangles pic.twitter.com/dDPpzk0L3B
— People's Daily, China (@PDChina) December 7, 2016

There is no evidence to support the IQ claim, but answers to the puzzle have included 17, 18, 24 and 28.

Many people had different answers

I'll go for 20.
— Fordington Field (@FordingtonField) December 7, 2016

18 actually, but you must look carefully at everything.
— Free Mind (@FreeMindHK) December 8, 2016

I got 19 triangles
— Kaniinak (@kaniinak14) December 8, 2016

So how many triangles can you see in the picture? (Scroll down for the solutions.)

can you explain the 28? I can only see 24... @PDChina https://t.co/30vK8ShSBK fun nightcap :) pic.twitter.com/Dk84UNbuMU
— Mark Moriarty 🎙️🎧 (@MbyM) December 7, 2016