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by Mickydtron 3622 days ago
You might be able to approximate the triangle in line by using slash and backslash. 2/3\ = 8. 2/\8 = 3. /3\8 = 2. Not nearly as pretty, but if you're familiar with the triangle in a hand written context, it might get the point across.
1 comments

Just use the connecting edge: 2(/)3 = 8, 2(-)8 = 3, 3(\)8 = 2.