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House of lines. This is a two-player game. Pick a room in your house! Player 1 gets a point for every pair of parallel lines they can find in the room. Player 2 gets a point for every pair of ...
- Perpendicular Lines
- Quick Check of Perpendicular
- Vertical Lines
- Summary
Two lines are perpendicular when they meet at a right angle (90°). To find a perpendicular slope: In other words the negative reciprocal
When we multiply a slope m by its perpendicular slope −1m we get simply −1. So to quickly check if two lines are perpendicular: Like this:
The previous methods work nicely except for a vertical line: In this case the gradient is undefined (as we cannot divide by 0): m = yA − yBxA − xB = 4 − 12 − 2 = 30= undefined So just rely on the fact that: 1. a vertical line is parallel to another vertical line. 2. a vertical line is perpendicular to a horizontal line (and vice versa).
parallel lines: sameslopeperpendicular lines: negative reciprocalslope (−1/m)- Slope
- −0.5
Horizontal means "side-to-side" hence horizontal line is a sleeping line, whereas, vertical means "up-to-down" therefore a vertical line is a standing line. Horizontal lines are lines drawn from left to right or right to left and are parallel to the x-axis. Vertical lines are lines drawn up and down and are parallel to the y-axis.
Fact 4.8.23. A vertical line and a horizontal line are perpendicular. For lines that are neither vertical nor horizontal, they are perpendicular if and only if the slope of one is the negative reciprocal of the slope of the other. That is, if one has slope m, the other has slope − 1 m.
A vertical line is a line that is perpendicular to the surface or another line that is considered as the base. In coordinate geometry, the vertical lines are parallel to the y-axis and are perpendicular to the horizontal lines. A vertical line is always a straight line that goes from top to bottom or bottom to top.
Vertical Line. In a coordinate plane, a line parallel to the Y-axis is called Vertical Line. It is a straight line which goes from top to bottom and bottom to top. Any point in this line will have the same value for the x-coordinate. For example, (2,0), (3,0) (-4,0), etc. are the points of vertical lines. Similarly, the line which goes from ...
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In a coordinate plane, a vertical line is defined as a line that is parallel to the y-axis. The y-axis itself is a vertical line, so it follows that any line parallel to it is also a vertical line. Below is the graph of a vertical line that has an x-intercept of (h, 0). The x-coordinate for any point on the vertical line is h.
