Question

In the adjoining figure. Find triangle CDB, triangle DBC and triangle ABC​

Answer 1

Answer:

that is the full answer .angle BDC is similar to angle CDB.

Answer 2

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tri. CDB =we will look on line ab it is 180 degree where ADB is 100 degree so, 180-100=80

there fore CDB =80 degree

sum off all angle in triangle used to be 180 degree so, other 2 measure 80+45=125 degree

angle DBC=180-125=55degree

for ABC we need to do sum of angle ABD and DBC so ,we have angle DBC=55degree let's find ABD sum of 3 angle used to be 180 degree we have two angle,find other one =180-(100+40)= 180-140=40 degree so, now add ABD+DBC=ABC

40+55= 95degree

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