Question

6. In figure 3.27. LMNO and LCBA are each a parallelogram.
B
75%
L
M
Fig. 3.27
IfM=75, calculate:
) ALAB
(i) ZABC​

Answer 1

Step-by-step explanation:

Opposite angles of parallelogram are equal.

∠DAB=∠BCD=75

o

and ∠DBC=60

o

∠BDC+∠DBC+∠BCD=180

o

∠BDC=180

o

−∠DBC−∠BCD=180

o

−75

o

−60

o

=45

o