10) Transformations Flashcards

1
Q

What can you use a column vector to describe?

A

A transformation.

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2
Q

What do you need to give to describe fully a reflection on a coordinate grid?

A

Equation of mirror line.

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3
Q

How do you rotate a shape?

A

Turning it around a point called centre of rotation.

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4
Q

What is the centre of rotation?

A

The point around which a shape is rotated.

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5
Q

How do you describe fully a rotation?

A

Give angle, direction + centre of rotation.

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6
Q

What do you need to do to enlarge a shape?

A

Multiply all side lengths by same number.

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7
Q

What is the number the side lengths are all multiplied by called?

A

Scale factor.

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8
Q

What do you do when you enlarge a shape using a centre of enlargement?

A

Multiply distance from centre to each vertex by scale factor.

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