Question

In an examination, a student was given a problem with value of angle ADC as 132º and that of angle AEC as 110°. The student calculated the remaining angles as given below. Identify whether the student has solved it correctly or whether the data is insufficient to answer the problem.


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Answer 1

Answer:

Consider the fig,

we know that ,

Sum of the angles in a triangle is 180degree but in fig triangle ECB the sum of angles is 80+40+70=190 so it is wrong.

And we can calculate angle CDE and DCE by data

angle CDE=48 degree

angle DCE=22 degree