It has a right angle (90 degrees) and 2 sides are equal which makes it isosceles.
So there's only one choice left.
8.235 X 10 -4exponent. The exponent is negative because you moved the decimal to the right instead of left :) hope this helps!
The answer is 6 because 5 candies go's up by three so you would add 3 to 3 3+3