Question

ABCD is a parallelogram angle ACE=angle BED =90degree. The value of angle EAC+angle ABC minus 2 angle DAC is what 20degree,10degree,30degree,40degree

Answer 1

given triangle ace=bed
ae=be (given)
cell=ed (given)
ae=be (common)
then by sss congruence criteria ace=bed.

Answer 2

Thank you for asking this question. Here is your answer:

First of we will solve this:

EAC+ABC-2DAC

Then we will put the values in it:

=90°+45°-2×45°

=90°+45°-90°

=45°

After solving the above given equation we will get 45°.

So our final answer is 45°

If there is any confusion please leave a comment below.