Question

2)Precizati dacă in urmatoarele cazuri patrulaterul convex ABCD este trapezissel:
a) AB||CD. ADN BC = AD- BC-tem :
b) AB | CD, ADI CD,m(ABCD) = 30°
c) AD|| BC, ABH CD, m(4ABC) = m(aDCB) = 60°
d)m(ABC) = 60'. m(BAD) = 120°.m((ADC) = 120°
e) AD|| BC, AB CD, AC = 8D = 7cm
n AB||CD, m(SADC) = 60° 1(&ACD) = 614
g) m(ABC) = 50°, m(xBAD)= 130"m(*DCB)=50"​

Answer 1

Răspuns:

g)m(ABC)=50°,m(xBAD)=130"m(*DCB)=50"