Can You Solve the ‘Pink Triangle’ Math Problem That's Stumping the Internet?

iStock
iStock

Another day, another math problem that has all of social media scratching their collective heads. This one comes to us via Ed Southall, self-professed “maths bloke” and author of Geometry Snacks.

The question he poses is a simple one, albeit deceptively so: What fraction is shaded?

Though the main image is a simple square, that it’s broken down into four uneven “pieces” is what seems to be giving people the most trouble in figuring out the area of the pink shaded triangle.

Fortunately, hundreds of problem solvers were game to give the problem a try, and share how they came up with their answers with the Twitterverse—some of whom went full on Good Will Hunting on the problem:

Look closely at the solutions above and you’ll notice that they all come up with “1/3” as the answer, which is correct (even if they came to it in slightly different ways).

According to Business Insider reporter Andy Kiersz, the answer lies in figuring out the height of the pink triangle. “The key trick is that the little triangle up top is similar to the pink triangle, which means that the little triangle is just a smaller version of the pink triangle,” Kiersz wrote.

"A property of similar triangles is that the ratio of the triangles' heights will be the same as the ratio of their bases," Kiersz continues. "Since the pink triangle's base is twice the little triangle's base, its height is also twice the little triangle's height. But we know that the little triangle's height plus the pink triangle's height is 1, so that means the pink triangle's height is 2/3. Plug that on in and we get our area = 1/2 x base x height = 1/2 x 1 x 2/3 = 1/3."

(Southall confirmed that 1/3 is indeed the correct answer.)

[h/t: Business Insider]

18 Disney Characters Just Got the LEGO Treatment

LEGO
LEGO

If you’ve ever wondered what one of Disney's princesses might look like standing next to Batman or Harry Potter, now's your chance to find out. LEGO has created minifigures of 18 characters from beloved Disney movies, and they’re a pretty diverse bunch.

There are Disney princesses and heroes, like Jasmine, Elsa, and Hercules. There are offbeat favorites, like Jack and Sally from The Nightmare Before Christmas. A couple villains were thrown into the mix for good measure, and classic characters like Mickey and Minnie Mouse are also represented.

It has been a big week for both LEGO and Disney. The toy company announced the impending release of a 751-piece set that recreates the boat from Steamboat Willie, the 1928 short film that launched Mickey to stardom. The timing is also fitting, considering that Mickey recently celebrated his 90th birthday (not too bad for a mouse).

The S.S. Willie set will be available on April 1, but fans will have to wait a little longer for the Disney minifigures. Those will be available on the LEGO Store website and in stores nationwide starting May 1. Each minifigure costs $3.99.

Until then, check out some of the figures below, or browse LEGO’s selection of Disney-themed sets.

A Disney minifigure
LEGO

A Disney minifigure
LEGO

A Disney minifigure
LEGO

A Disney minifigure
LEGO

Disney’s Steamboat Willie Has Been Immortalized in LEGO

LEGO
LEGO

Mickey Mouse recently turned 90 years old, and soon, you’ll be able to celebrate with LEGO. Steamboat Willie, the classic Disney short film that introduced Mickey Mouse to the world in 1928, has now been recreated in a LEGO set that will be released on April 1.

The 751-piece LEGO version of the S.S. Willie features grayscale bricks that recreate the original black-and-white aesthetic of the original film. The 10-inch-long LEGO boat features moving steam pipes and paddle wheels and comes with new Mickey and Minnie minifigures. It’s also equipped with a ship’s wheel, a life buoy, a buildable bell, and a working crane that can lift the vessel’s potato-bin cargo.

LEGO's Steamboat Willie set
LEGO

The Steamboat Willie set was born out of the company’s fan-generated LEGO Ideas initiative several years ago. Creator Máté Szabó submitted the idea to LEGO in June 2016, then LEGO designers John Ho and Crystal Marie Fontan worked to adapt the set for retail sale, creating decorative elements and the new Mickey and Minnie Mouse minifigures.

LEGO's Steamboat Willie set
LEGO

Buy the kit on the LEGO Store website for $90 starting April 1. If you can't wait to get your LEGO fix, check out the company's other Mickey Mouse-themed products here.

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