Question 129
The quadrilateral $ABCD$ satisfies $\angle ACD = 2 \angle CAB$, $\angle ACB = 2 \angle CAD$ and $CB = CD$.
Show that $\angle CAB = \angle CAD$.
Show that $\angle CAB = \angle CAD$.
MathNet 2019-part-04 — 184 problems (EN–VI) Question 129
Math Olympiad Vault · MathNet 2019-part-04 — 184 problems (EN–VI)