Question

Five fourths of a right angle

Answer 1

Five fourths of a right angle

A right angle is 90 degrees.

Five fourths is $\sf \frac{5}{4}$

Five fourths OF A right triangle

$\sf \frac{5}{4}$ OF 90 degrees

Of means multiplication so:

$\sf \frac{5}{4}\times 90$

And that equals to 112.5

So your final answer is

$\boxed{\bf{112.5~degrees}}$