## What profession uses parallel and perpendicular lines?

A person might would use parallel and perpendicular lines in the construction profession. An architect may rely on the lines to construct a house and see how the house may be built.

## Are these lines parallel?

are these lines parallel? Parallel lines have the same slope. If you turn both equations into the y = mx+b form (the first equation is already in this form) then you can compare the “m” values. If they are the same, and the sign (pos/neg) is the same and the values of “b” are different, then the lines are parallel.

## Do parallel lines mean no solution?

Since parallel lines never cross, then there can be no intersection; that is, for a system of equations that graphs as parallel lines, there can be no solution. This is called an “inconsistent” system of equations, and it has no solution.

## Why are lines parallel?

Lines are parallel if they are always the same distance apart (called “equidistant”), and will never meet.

## How do you know if two lines are parallel in a triangle?

If a line parallel to one side of a triangle intersects the other two sides of the triangle, then the line divides these two sides proportionally.

## Which Cannot be used to prove two lines parallel?

If two line are cut by a transversal so that a pair of vertical angles are congruent, then the lines are parallel. Since, vertical angles don’t prove the lines cut by a transversal are parallel.

## Can you prove that lines P and Q are parallel?

is it possible to prove that lines p and q are parallel? If so, state the postulate or theorem you would use. If the lines are cut by a transversal so that (alternate interior, alternate exterior, corresponding) angles are congruent, then the lines are parallel.

## How do you tell if a slope is horizontal or vertical?

Note that when a line has a positive slope it rises up left to right. Note that when a line has a negative slope it falls left to right. Note that when a line is horizontal the slope is 0. Note that when the line is vertical the slope is undefined.

## What does a diagonal line look like?

A diagonal is a straight line connecting the opposite corners of a polygon through its vertex. To learn about diagonals, we must first know that: It (diagonal) is a line segment….Diagonal – Definition with Examples.

Shape Names Number of Vertices Number of Diagonals
Decagon 10 35

## What is the example of diagonal lines?

The definition of diagonal is something with slanted lines or a line that connects one corner with the corner furthest away. An example of diagonal is a line going from the bottom left corner of a square to the top right corner.