Question

ADD ab+cd,bc+ad,ac-dc

Answer 1

Answer:

Step-by-step explanation:

Given :

ADD ab+cd,bc+ad,ac-dc

Solution :

.AB = CD (from the given )

.BC = AD (from the given ) BD BD (common side )

:: A ADB = A DBC by SSS congruence

.rule.

.therefore from CPCT we can write

.that ZADB = 2 DBC (alternate interior

angle)

.since the alternate interior angles and opposite sides are equal in a

quadrilateral