Answer:
Triangle C
Step-by-step explanation:
Hello There!
An isosceles triangle has two congruent sides
Triangle C has two sides that equal 4 therefore triangle C is an isosceles triangle
Triangles A, B and C have no congruent sides therefore they are not isosceles triangles
Answer:
k = 3 or k = -4
(Anyone can correct me if I'm wrong)
Step-by-step explanation:

-2+5=3
And is a word used for addition. For example 20 and 6 is 26.
0 anything multiplied by Zero is zero