A rectangle has two vertical lines.
A rectangle is a four-sided polygon with four right angles (90 degrees). These sides are called "lines." Let's break down why only two are vertical:
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Vertical Lines: Vertical lines are straight lines that extend directly up and down, perpendicular to a horizontal line or a level surface.
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Horizontal Lines: Horizontal lines are straight lines that extend from left to right, parallel to the horizon or a level surface.
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Rectangle's Composition: A rectangle is formed by two vertical lines of equal length and two horizontal lines of equal length. The vertical lines stand upright, and the horizontal lines lie flat. Since vertical lines extend straight up and down, and a rectangle has two such lines, the answer is two.
