Geometry
# Classification of Triangles

In the above diagram, \[\angle DCE=a=99^\circ, \lvert \overline{AB}\rvert =\lvert \overline{AC}\rvert=\lvert \overline{CE}\rvert,\] and \(\overline{BE}\) and \(\overline{BD} \) are both straight lines. What is the value of \(\angle ABC(=x)\) in degrees?

**Note:** The above diagram is not drawn to scale.

In the above diagram, \[\angle{BAD} = 22^{\circ}, \overline{AB}=\overline{BD}=\overline{CD}=\overline{DE}.\] What is \(\angle{CEA}?\)

**Note:** The above diagram is not drawn to scale.

Which of the following does NOT sufficient to indicate an isosceles triangle?

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