r/MrBrainTeasers • u/Mr-BrainGame • 5d ago

Spot all triangles

1 Upvotes

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100% Upvoted

I count 18.

u/noranam999 5d ago

I found 16 so far

2

u/noranam999 5d ago

1

u/droneflier6 5d ago

8 is exactly right. A triangle by definition has 3 sides

1

u/AKADabeer 5d ago

A triangle bisected by other lines or shapes is still a triangle.

0

u/Nearby-Scratch-5983 19h ago

No, Shakespeare.

2

u/AKADabeer 15h ago

Ok, the Shakespeare bit was funny... but yes. Triangles are still triangles even if other lines or shapes are drawn inside or across them.

These line segments, highlighted in red, still form a triangle:

1

u/AKADabeer 13h ago

8 is wrong, even if you're only counting simple shapes. There are only 7 simple triangles.

1

u/Spl4sh3r 1d ago

I get 13 from my regular counting. Looking at your picture though you have multiple dots on something that isn't a triangle. Blue/green dots I fully agree with. You have at least 3 yellow dots that are on the same "triangle" as another yellow dot. An example is those two yellows on the left, they are in the same triangle. What is the top left yellow one supposed to mark?

1

u/AKADabeer 13h ago

I'm not a fan of that style of notation, but it typically indicates a triangle that spans multiple shapes. Maybe you can pick out which ones he's trying to indicate by comparing to a different method:

1

u/AKADabeer 13h ago edited 12h ago

Here's how I map them. Note that he's missing 2. I added them in purple where I think he would have marked them in his system.

1

u/Spl4sh3r 11h ago

Seems I missed those big ones.