Answer:
Using sides and angles, Danielle is correct, that's not possible.
We know above the triangle is an acute Isosceles Triangle, and the rules is the all angles must < 90° and Sasha draw one angle that > 90 (which is 100°) that's not even correct. From the sides perspective, i see that is not possible because isosceles must have 2 equal side lengths.
━━━━━━━━━━━━━━━━━
Hope it helps!