Question

the following pairs of triangles are congruent . find the unknown angles​

Answer 1

Answer:

30 and 30

Step-by-step explanation:

Because ANGLE DBC IS CONGRUENT TO ANGLE ACB

BOTH TRIANGLES ARE CONGRUENT SO

ANGLE CAB=ANGLE BDC

30 =30

ANGLE BDC=30

Answer 2

Let middle point be E

In triangle BCD

30°+30°+E=180°

E=120°

E+ang.CED=180° [linear pair]

ang.CED=60°

Now in triangle CED

ang.C+ang.D+ang.E=180°

90°+60°+ang.D=180°

D=30°

I HOPE THIS IS HELPFUL FOR YOU

THANKS..