White Rose Maths Year 9 Mathematics Supplementary Flashcards
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51 Terms
Direct proportion
As one quantity increases, the other increases by the same factor. The graph is a straight line that passes through the origin
Inverse proportion
As one quantity increases, the other decreases by the same factor
Reciprocal
The multiplicative inverse of a number
When dividing/multiplying by a negative
Flip inequality signs
What angles on a straight line sum to
180 degrees
What angles around a point sum to
360 degrees
What angles in a triangle sum to
180 degrees
What vertically opposite angles are
Equal
Formula for interior angle sum of a polygon
180(n - 2)
What co-interior angles sum to
180 degrees
Corresponding angles
Equal & lie on the same side of the transversal and in corresponding positions
Alternate angles
Equal & angles on opposite sides of a transversal
Asymptote
A line that a graph approaches but never touches
Object
What you start with, before a transformation
Image
Result after transformation
Invariant points or lines
Points or lines that aren't affected by a transformation
Reflection
Flipping (a shape) over a line
Rotation
Turning (a shape) about a point
Density
Mass / Volume
Compound measure
Combine two or more different units/measures
Theoretical frequency
Number of times an outcome is expected to occur, found by P(A)#Trials
Sample space diagram
Two-way table used to show all possible outcomes, which can be used to find probabilities
Types of congruency in triangles
ASA, SSS, SAS and RHS
Density
Mass / Volume
Compound measure
Combine two or more different units/measures
Theoretical frequency
Number of times an outcome is expected to occur, found by P(A)#Trials
Sample space diagram
Two-way table used to show all possible outcomes, which can be used to find probabilities
Object
What you start with, before a transformation
Image
Result after transformation
Invariant points or lines
Points or lines that aren't affected by a transformation
Reflection
Flipping (a shape) over a line
Rotation
Turning (a shape) about a point
Direct proportion
As one quantity increases, the other increases by the same factor. The graph is a straight line that passes through the origin
Inverse proportion
As one quantity increases, the other decreases by the same factor
Reciprocal
The multiplicative inverse of a number
When dividing/multiplying by a negative
Flip inequality signs
What angles on a straight line sum to
180 degrees
What angles around a point sum to
360 degrees
What angles in a triangle sum to
180 degrees
What vertically opposite angles are
Equal
Formula for interior angle sum of a polygon
180(n - 2)
What co-interior angles sum to
180 degrees
Corresponding angles
Equal & lie on the same side of the transversal and in corresponding positions
Alternate angles
Equal & angles on opposite sides of a transversal
Asymptote
A line that a graph approaches but never touches
Types of congruency in triangles
ASA, SSS, SAS and RHS
Calculation to rotate points by 180º
multiply x and y values by -1 (-x,-y)
How to write coordinates to rotate by 90º clockwise/270º anticlockwise
(y,-x), x value becomes y and y value becomes -x
How to write coordinates to rotate by 90º anticlockwise/270º clockwise
(-y,x), x value becomes -y and y value becomes x.
Formula for area of trapezium
1/2(a+b)h
Note 
Flashcards (57)