The numbers in the thousands period are 827
This is true. An isosceles triangle is one that has two equal sides and two equal angles. The third side can be any length and the third angle will also vary depending on the other two angles. An equilateral triangle is one where all sides and angles are equal. An isosceles can be equilateral, but it does not have to be.
If you could put in the tablet.
But the equation would be: a_n = a_1 (r)^(x-1)
with a_1 being the first category
r being 5 how much brighter than the day before is
and x is what nr. in the sequence it is
But I'm not sure as I cannot see the table