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6. Angles from Directions
Examples of computing angles from directions were covered in the VI. Directions topic. When a loop traverse is involved and all its angles are computed, the angle condition should be verified as a math check (always include a math check were possible).
Recall that the angle conditions for loop traverses are:
| Angle type | Condition |
| Interior |   |
| Deflection - Even crossings |  |
| Deflection - Odd crossings |  |
If the condition is not met, then a math error exists. Go back over your comps.