Higher Maths - Straight Line

How can you tell if two lines are parallel?
They have equal gradients
1 of 10
What are collinear points?
Points that lie on the same straight line
2 of 10
How can you tell if points are collinear?
If two lines are parallel AND share a common point
3 of 10
What do you need to write to communicate your findings in a collinearity question?
1. the two gradients that are equal to each other (e.g Mab = Mbc) 2. therefore which lines are parallel 3. The common point 4. All points that are collinear 5. Refer back to question if necessary
4 of 10
Any two lines which meet each other at 90° are...
Perpendicular
5 of 10
How do you find the perpendicular gradient of another gradient?
Divide it by -1 (i.e if m=8 then m⊥= 8÷-1 = -1/8) OR swap the numerator and denominator and then multiply by -1 (i.e m=4/3 m⊥=-3/4)
6 of 10
If you see the words "positive direction of x-axis" what relationship will you use?
m = tanθ
7 of 10
A median is a...
Line drawn from a vertex to the midpoint of the opposite side
8 of 10
A line drawn from a vertex which is perpendicular to the opposite side is an...
Altitude
9 of 10
What is a perpendicular bisector?
A line that cuts another line in half at a right angle
10 of 10

Other cards in this set

Card 2

Front

What are collinear points?

Back

Points that lie on the same straight line

Card 3

Front

How can you tell if points are collinear?

Back

Preview of the front of card 3

Card 4

Front

What do you need to write to communicate your findings in a collinearity question?

Back

Preview of the front of card 4

Card 5

Front

Any two lines which meet each other at 90° are...

Back

Preview of the front of card 5
View more cards

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