Question

use the diagram of the state flag of texas shown at the right. 18. name four pairs of parallel lines on the flag. 19. name two pairs of perpendicular lines on the flag. 20. what parts of the diagram represent a line perpendicular to a plane?

Explanation:

Step1: Identify parallel lines

Parallel lines are lines that never intersect. In the flag diagram, we can observe the following pairs: $AB\parallel CD$, $BC\parallel DE$, $DE\parallel GH$, $AB\parallel GH$.

Step2: Identify perpendicular lines

Perpendicular lines intersect at a right - angle. In the flag, we have $AB\perp BC$, $BC\perp CD$.

Step3: Identify line perpendicular to a plane

The flagpole is perpendicular to the plane of the flag. So the flagpole represents a line perpendicular to a plane.

Answer:

1. $AB\parallel CD$, $BC\parallel DE$, $DE\parallel GH$, $AB\parallel GH$
2. $AB\perp BC$, $BC\perp CD$
3. The flagpole