GMATH practice exercise (Quant Class 1)
If line AC bisects angle BCD, what is the measure of angle ADC?
(A) 20 degrees
(B) 30 degrees
(C) 40 degrees
(D) 45 degrees
(E) 50 degrees
Answer: [spoiler]____(B)__[/spoiler]
If line AC bisects angle BCD, what is the measure of angle A
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- fskilnik@GMATH
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- fskilnik@GMATH
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$$? = x$$
$$\Delta BCE\,\,:\,\,\,20 + x = 180 - \left( {110 + 20} \right)\,\,\,\,\, \Rightarrow \,\,\,\,\,? = x = 30$$
The correct answer is (B).
We follow the notations and rationale taught in the GMATH method.
Regards,
Fabio.
Fabio Skilnik :: GMATH method creator ( Math for the GMAT)
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