Question

In the given figure, AB=BC and LABO = LCBO,
then prove that LDAB - LECB...​

Answer 1

Step-by-step explanation:

In triangle AOB and triangle BOC

AB = BC ......(given)

OB = OB ......(common)

LABO = LCBO....(given)

triangle BAO congruent to triangle BCO (SAS)

LBAO = LBCO .....CPCT

Multiply by (-1) on both sides

- LBAO = - LBCO

Adding 180 on both sides

180 - LBAO = 180 - LBCO

LBAD = - LBCE.........(using linear pairs)