Is it possible to draw a triangle with these measurements 90, 60, 60

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

Find the total area for the regular pyramid ( follow the answer set up in the picture)

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.