Spot, with little, or no working out.

Example: Identify which shapes are congruent.

ðŸ”‘Key Identify Topics: Similar Shapes, Congruent Triangles

ðŸ‘€Also Look up: Work Out, Congruent

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Spot, with little, or no working out.

Example: Identify which shapes are congruent.

ðŸ”‘Key Identify Topics: Similar Shapes, Congruent Triangles

ðŸ‘€Also Look up: Work Out, Congruent

Synonyms: Similarity

Two shapes are said to be similar if they are enlargements of one another.

Exmaple: A and B are similar shapes.

ðŸ”‘Key Similar Topics: Similar Shapes: Finding Sides, Similar Shapes: Area, Similar Shapes: Volume

ðŸ‘€Also Look up: Enlarge, Scale Factor

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

ðŸ”‘Key Ratio Topics: Simplifying, Sharing the Total, Using Ratios

ðŸ‘€Also Look up: Simplify, Equivalent

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.

ðŸ”‘Key Scale Factor Topics: Enlargement, Similar Shapes

ðŸ‘€Also Look up: Enlarge, Similar

The matrix used to describe a translation or vector. The top number represents the horizontal movement and the bottom number the vertical movement.

Example:

ðŸ”‘Key Column Vector Topics: Translation, Vectors

ðŸ‘€Also Look up: Matrix, Translate, Vector

Changes

Example: x varies in proportion to y.

ðŸ”‘Key Varies Topics: Proportion

ðŸ‘€Also Look Up: Proportion, Inverse Proportion, Direct Proportion

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:

ðŸ”‘Key Line of Best Fit Topics: Scatter Graphs

ðŸ‘€Also Look Up: Scatter Graph, Correlation, Data, Extrapolate

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:

ðŸ”‘Key 2D Topics: Scatter Graphs

ðŸ‘€Also Look Up: Line of Best Fit, Data, Correlation, Extrapolate

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.

ðŸ”‘Key Correlation Topics: Scatter Graphs

ðŸ‘€Also Look Up: Scatter Graph, Line of Best Fit, Data