Check if 3 sides can form a triangle
Measure or obtain the lengths of all three sides: A, B, and C.
Why: All three sides are needed. You cannot determine if three segments form a triangle without all measurements.
Check that A, B, and C are all greater than zero.
Why: Negative or zero lengths are impossible in real geometry. This catches invalid input immediately.
Check that A + B > C (sum of two shortest sides exceeds the longest).
Why: If this fails, the other two checks will also fail. This is typically the most restrictive condition.
Verify A + C > B and B + C > A (all three combinations must pass).
Why: The triangle inequality theorem requires ALL three conditions. Failure of any one means no triangle forms.
Valid triangle means sides can physically connect. Invalid result means measurement error or intended non-triangle.
Why: This test is fundamental to geometry. Systems often use it to validate input before proceeding with further calculations.
Validating Triangular Bracing
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