Question

Exterior angle ACD of a triangle hundred degree and Angle ABC and angle BAC in the angle of the triangle is a 2x B 3x and hundred degree​

Answer 1

Answer:

Step-by-step explanation:

by the theorem on remote exterior angle ..

..the measure of the exterior angle is equal to the sum of the remote interior angles..

thus ..

.. angle ACD=angle BAC +angle ABC

..110=70+angle ABC..

..angle ABC=110-70

angle ABC=40°

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