Help please

a) Scalene

b) Scalene

c) Isosceles

Step-by-step explanation:

Here, we want to get the type of triangle with the given side lengths

a) 2,5,4

All the side lengths are different, the triangle type is scalene triangle

b) 9,12,13

All side lengths are different, the triangle type is scalene triangle

c) 4,4,9

Two side lengths are equal

The triangle type is an isosceles triangle

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people

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