Question

plz answer the q given in the above image​

Answer 1

Answer:

since AB||DE so angle ABC=45° (alt angles)

in triangle, abc, abc+cab+ acb=180°

or, angle acb=180-45-45=90°

Answer 2

Answer:

angle acb is equals to 90 degre because angle

ABC is equal to 45 bcz of alternative interior angle

then by angle sum property of triangle

45+45+angle acb=180

then ach =90

hope it will help you

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