The answer is A.
I'm too tired to explain. yadayadayada
Answer:
lines that intersect each other like a cross
Step-by-step explanation:

1. The triangle is Isosceles and acute A (since there are two equal sides and the angles are less than 90)
2. Right triangle E (since there is a right angle)
3. The triangle is obtuse scalene T (since there are no equal sides and one angle is greater than 90)
4. Right isosceles O
5. Acute equilateral N
6. Obtuse scalene T<span />
The answer is C
Is shows a change of rate for the integer
Hope this helps