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SELECT
CASE
WHEN A + B <= C OR B + C <= A OR A + C <= B THEN 'Not A Triangle'
WHEN A = B AND B = C THEN 'Equilateral'
WHEN A <> B AND A <> C AND B <> C THEN 'Scalene'
ELSE 'Isosceles'
END
FROM TRIANGLES
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Type of Triangle
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SELECT CASE WHEN A + B <= C OR B + C <= A OR A + C <= B THEN 'Not A Triangle' WHEN A = B AND B = C THEN 'Equilateral' WHEN A <> B AND A <> C AND B <> C THEN 'Scalene' ELSE 'Isosceles' END FROM TRIANGLES