Question

1. (figure of a triangle with midline and congruent marks, side labeled 2x and 20)

Explanation:

Step1: Identify Midline/Equal Segments

The marks (double bars and single bars) indicate equal segments, so the triangle has a midline (or the segment creates two congruent sides). Thus, \(2x = 20\) (since the sides with \(2x\) and \(20\) are equal, as per the congruency marks).

Step2: Solve for \(x\)

From \(2x = 20\), divide both sides by 2: \(x=\frac{20}{2}=10\).

Answer:

\(x = 10\)