Match the statements with their values mabc + mbac + macb when abc is an isosceles triangle with ab=ac mabc when mbac = 70° and abc is an isosceles triangle with ab=ac mqpr when mqrp = 30 and pqr is an isosceles triangle with po = qr mbde when mbac = 45° and points d and e are the midpoints of ab and bc, respectively, in abc