15 points!! m ABC + mBAC + m ACB
when ABC is an isosceles triangle with AB=AC
mABC when mBAC = 70°
and ABC is an isosceles triangle with
AB=AC
mZQPR when mZQRP = 30°
and APQR is an isosceles triangle with
PQ = QR
mZBDE when mZBAC = 45°
and points D and E are the midpoints
AB and BC, respectively, in AABC