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2 changes: 1 addition & 1 deletion exercises/practice/phone-number/.docs/instructions.md
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@@ -1,6 +1,6 @@
# Instructions

Clean up user-entered phone numbers so that they can be sent SMS messages.
Clean up phone numbers so that they can be sent SMS messages.

The **North American Numbering Plan (NANP)** is a telephone numbering system used by many countries in North America like the United States, Canada or Bermuda.
All NANP-countries share the same international country code: `1`.
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6 changes: 6 additions & 0 deletions exercises/practice/triangle/.docs/instructions.md
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Expand Up @@ -13,6 +13,12 @@ A _scalene_ triangle has all sides of different lengths.

For a shape to be a triangle at all, all sides have to be of length > 0, and the sum of the lengths of any two sides must be greater than or equal to the length of the third side.

~~~~exercism/note
_Degenerate triangles_ are triangles where the sum of the length of two sides is **equal** to the length of the third side, e.g. `1, 1, 2`.
We opted to not include tests for degenerate triangles in this exercise.
You may handle those situations if you wish to do so, or safely ignore them.
~~~~

In equations:

Let `a`, `b`, and `c` be sides of the triangle.
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