Question

1)
choose the wrong name for this angle:
a) $\angle cde$ b) $\angle e$
c) $\angle d$ d) $\angle 4$

Explanation:

• $\angle CDE$: Names the angle with vertex $D$ between points $C$ and $E$, which is valid.
• $\angle E$: Uses only point $E$ as the angle name. Point $E$ is on a ray, not the vertex of the angle, so this is an invalid name.
• $\angle D$: Uses the vertex $D$ (the only angle at $D$), so this is valid.
• $\angle 4$: Matches the labeled number for the angle, so this is valid.

Answer:

B) $\angle E$