No shes not.
You need to add all the sides if finding perimeter
The answer would be A because you would use the Pythagorean theorem which is a^2+b^2=c^2. Therefore it would be 36+64=100, which is correct. If you wanted to be sure do it for the rest and none of them will work. Hope this helps!
Answer:
Acute angle
Step-by-step explanation:
170-100=70
An angle between 0 and 90 degrees is an acute angle.
