How many triangles?

 I took this lovely activity from Nolan Fossum's tweet. 

Oranges

 

How many Cuties do you see? And how did you count them?

(by @cutiescitrus)

How Many Maths?

 

Another Palindrome Word Counting

 

Race Car Puzzle

 

 

Flag Colors

Isosceles Triangles

Here are some points. Join any three of them and make isosceles triangles. How many can you make?

Cubes with Red Dots

How Many Different Routes?

Adding Odds

Using positive odd integers and addition operation only, in how many different ways can you get 10?

Problem 145: What comes next?

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Problem 142: How many triangles?

Rich Tasks 75: "MATHS" Puzzle

Rich Tasks 74: "MATH" Puzzle

Rich Tasks 73: "MAT" Puzzle

Problem 137: Triangles of Sri Yantra

By Ranjithsiji - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=14796037

This is a photo of Shri Yantra, a diagram used in Hinduism. IT has a lot of triangles. How many triangles can you count? You can find a vector version below:

Problem 133: How many 5s?

How many 5s?



source: Jonathan Hall

Problem 131: Quarter final combinations

Four English teams have progressed to the Champion's League quarter-finals. What is the probability of an all-English tie?















Hint 1
Hint 2
Hint 3

Rich Tasks 56: Powers 2

Also look: Different forms of a number
                  Powers 1

Problem 73: How many triangles?

How many triangles can you count?