Spot, with little, or no working out.
Example: Identify which shapes are congruent.
🔑Key Identify Topics: Similar Shapes, Congruent Triangles
👀Also Look up: Work Out, Congruent
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Similar
Synonyms: Similarity
Two shapes are said to be similar if they are enlargements of one another.
Exmaple: A and B are similar shapes.
🔑Key Similar Topics: Similar Shapes: Finding Sides, Similar Shapes: Area, Similar Shapes: Volume
👀Also Look up: Enlarge, Scale Factor
Ratio
The relationship between two, or more, number quantities. Written with colons between the numbers.
Example: The ratio of 6 oranges to 9 pears can be written as 6:9, or simplified 2:3
🔑Key Ratio Topics: Simplifying, Sharing the Total, Using Ratios
👀Also Look up: Simplify, Equivalent
Scale Factor
Abbreviation: S.F. (Not to be confused with s.f. for significant figure)
The number a which a shape’s sides are multiplied by in an enlargement.
Example: The scale factor from A to B is 2.
🔑Key Scale Factor Topics: Enlargement, Similar Shapes
👀Also Look up: Enlarge, Similar
Column Vector
The matrix used to describe a translation or vector. The top number represents the horizontal movement and the bottom number the vertical movement.
Example:
🔑Key Column Vector Topics: Translation, Vectors
👀Also Look up: Matrix, Translate, Vector
Varies
Changes
Example: x varies in proportion to y.
🔑Key Varies Topics: Proportion
👀Also Look Up: Proportion, Inverse Proportion, Direct Proportion
Cylinder
Line of Best Fit
A straight line drawn on a scatter graph, used to indicate the correlation. It can be used to work out estimates of data not plotted on the graph.
Example:
🔑Key Line of Best Fit Topics: Scatter Graphs
👀Also Look Up: Scatter Graph, Correlation, Data, Extrapolate
Scatter Graph
Synonyms: Scatter Diagram, Scatter Plot
A graph which shows two variables for a set of objects. Used to spot relationships, or correlation, between the two sets of data.
Example:
🔑Key 2D Topics: Scatter Graphs
👀Also Look Up: Line of Best Fit, Data, Correlation, Extrapolate
Correlation
The type of relationship two variables have with each other. Positive correlation is where as one variable gets larger, so does the other. Negative correlation is where as one variable gets larger, the other gets smaller. No correlation tells us that the variables are not linked.
Example: This graph shows positive correlation.
🔑Key Correlation Topics: Scatter Graphs
👀Also Look Up: Scatter Graph, Line of Best Fit, Data
Maths Definitions 