Exploring maths through problem solving

Problem of the Week

Reflex Angle Counting

How many reflex angles do you see for each of the digit symbols drawn here?

Answer:

For each digit (zero to nine) as drawn in the image, the number of reflex angles is:

Zero - 0

One - 1

Two - 2

Three - 3

Four - 2

Five - 5

Six - 4

Seven - 1

Eight - 4

Nine - 7

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