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  1. Prepare
  2. SQL
  3. Advanced Select
  4. Type of Triangle

Type of Triangle

Write a query identifying the type of each record in the TRIANGLES table using its three side lengths. Output one of the following statements for each record in the table:

  • Equilateral: It's a triangle with sides of equal length.
  • Isosceles: It's a triangle with sides of equal length.
  • Scalene: It's a triangle with sides of differing lengths.
  • Not A Triangle: The given values of A, B, and C don't form a triangle.

Input Format

The TRIANGLES table is described as follows:

Each row in the table denotes the lengths of each of a triangle's three sides.

Sample Input

Sample Output

Isosceles
Equilateral
Scalene
Not A Triangle

Explanation

Values in the tuple form an Isosceles triangle, because .
Values in the tuple form an Equilateral triangle, because . Values in the tuple form a Scalene triangle, because .
Values in the tuple cannot form a triangle because the combined value of sides and is not larger than that of side .