Perpendicular Lines
This lesson covers:
- What perpendicular lines are
- How to tell whether two lines are perpendicular
- How to find the gradient of a perpendicular line
Do perpendicular lines have the same gradients or different gradients?
Same gradients
Different gradients
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What is the angle between two perpendicular lines?
°
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If we know the gradients of two lines, how can we show that they're perpendicular to each other?
Adding their gradients together will give -1
Dividing their gradients by one another will give -1
Multiplying their gradients together will give -1
Subtracting their gradients from one another will give -1
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Are the lines below perpendicular to each other?
Yes, they are perpendicular
No, they are not perpendicular
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Are the lines below perpendicular to each other?
Yes, they are perpendicular
No, they are not perpendicular
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What is the gradient of the line perpendicular to:
m2 =
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