the height of the poster must be multiplied by the ratio which is 1 to 2.5 which is 40 cm.
True. If you're just changing the form, yes. But remember when you change one side of an equation, you must change the other in the same way.
Based on the given nomenclature of angles, I think the illustration would look like that shown in the attached picture. The common vertex is point B, that's why the middle point of the given angles is B. Now, according to Angle Addition Postulate, the individual interior angles should sum up to the total angle. So, the equation would be
m∠ABD = m∠ABC + m∠CBD
m∠ABC = m∠ABD - m∠CBD
m∠ABC = 85° - m∠CBD
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Answer:
E
Step-by-step explanation:
