Any symbols you like, although conventionally, lower case roman letters are used.
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In a triangle, the symbol ( K ) typically represents the area of the triangle. The area can be calculated using various formulas, such as ( K = \frac{1}{2} \times \text{base} \times \text{height} ) or using Heron's formula when the lengths of all three sides are known.
12, 7, 7
The symbol that represents change is delta. (It looks like a little triangle before the unit) ..../\..... ../....\..... /____\....
Scalene Triangle- a triangle with no congruent sides Isosceles Triangle- a triangle with two congruent sides Equilateral Triangle- a triangle with three congruent sides
A triangle can have only three sides. No triangle can have 9 sides!