QUESTION IMAGE
Question
which name can be used for the 20° angle?
∠evt
how is ∠evt related to ∠nve?
both angles have a vertex at point?
both angles share the side?
First Sub - Question (Which name can be used for the 20° angle?)
An angle is named by its vertex and two points on its sides. The 20° angle has vertex \( V \) and points \( E \) and \( T \) on its sides, so it can be named \( \angle EVT \) (or also \( \angle TVE \), but the given option is \( \angle EVT \)).
- Vertex: Both \( \angle EVT \) and \( \angle NVE \) have their vertex at point \( V \), since the vertex of an angle is the common endpoint of its two sides, and both angles have \( V \) as that common point.
- Shared Side: To find the shared side, we look at the sides of each angle. The sides of \( \angle EVT \) are \( VE \) and \( VT \), and the sides of \( \angle NVE \) are \( NV \) and \( VE \). So both angles share the side \( VE \) (or \( EV \), but in the given dropdown, \( V \) is not a side, \( E \) is a point, \( N \) is a point, and \( VE \) is represented as \( V \) in the dropdown? Wait, no, the sides are line segments. The side shared is \( VE \), and in the dropdown, the option \( V \) is incorrect, but looking at the options \( E \), \( V \), \( N \), \( T \), the side is \( VE \), and the vertex is \( V \). Wait, the first part: "Both angles have a vertex at point \( V \)". For the shared side, the sides of \( \angle EVT \) are \( VE \) and \( VT \), sides of \( \angle NVE \) are \( NV \) and \( VE \), so they share the side \( VE \), which is represented as \( V \) (maybe a typo, but among the options \( E \) (point), \( V \) (vertex, but also part of the side \( VE \)), \( N \) (point), \( T \) (point)), the shared side is related to \( VE \), so the shared side is \( VE \), and the vertex is \( V \).
The vertex of an angle is the common endpoint of its two sides. For \( \angle EVT \), the sides are \( VE \) and \( VT \), so the vertex is \( V \). For \( \angle NVE \), the sides are \( NV \) and \( VE \), so the vertex is also \( V \).
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\( \angle EVT \)