Step-by-step explanation:
Use Pythagorean Theorem to find the missing side
a = q
b = e
c = c
So,
to
which equals
and
m∠Q + m∠E+ m∠C = 180° ( which is m∠A + m∠B + m∠C= 180°)
find all the sides so when they are all added together they equal 180°
Sorry, I couldn't give you the answer but I hope this helped?