Question

1. refer to the figure. select four points that are collinear.

Explanation:

Step1: Recall Collinearity

Collinear points lie on the same straight line.

Step2: Analyze the Figure

In the given figure, points \( A \), \( B \), \( E \), and the line with \( C \), \( D \), \( E \), \( F \): Wait, looking at the figure, points \( A \), \( B \), \( E \) – no, wait, the vertical line has \( C \), \( D \), \( E \), \( F \), and the line from \( A \) passes through \( B \) and \( E \)? Wait, no, let's re-examine. The points on the same straight line: \( A \), \( B \), \( E \)? No, wait, the vertical line (let's say the line with arrow) has \( C \), \( D \), \( E \), \( F \) on it? Wait, no, the figure shows a plane \( P \), a point \( A \) outside, a line from \( A \) through \( B \) to \( E \), and a vertical line (with arrow) through \( C \), \( D \), \( E \), \( F \). Wait, actually, the four collinear points should be \( C \), \( D \), \( E \), \( F \) (since they lie on the same vertical line) or \( A \), \( B \), \( E \)? Wait, no, the options are \( A \), \( B \), \( C \), \( D \), \( E \), \( F \). Wait, looking at the figure, the vertical line (with the arrow) has points \( C \), \( D \), \( E \), \( F \) on it, so they are collinear. Alternatively, \( A \), \( B \), \( E \) – but no, the question says four points. Wait, the checkboxes are \( A \), \( B \), \( C \), \( D \), \( E \), \( F \). So the four collinear points are \( C \), \( D \), \( E \), \( F \) (since they lie on the same straight line in the plane \( P \)).

Answer:

\( C \), \( D \), \( E \), \( F \) (the checkboxes for \( C \), \( D \), \( E \), \( F \) should be selected)