# Enlargement by a fractional scale factor

### mrbartonmaths.com

If the scale factor is fractional positive, the image will be smaller than the object, but on the same side of the centre of enlargement. If the.

### Name: Math 9 Date: Math 9 Chapter 7 Similarity and

B Grade Distinguish between formulae for perimeter, area and volume by considering dimensions.Scale Factor Enlargement Triangle 1 has a length of 8 and a height of 5.

### Dilations in math. How to perform a dilation -Formula and

C Grade Enlarge a shape by a fractional scale factor Compare the area of an enlarged shape with the original shape Find the centre of enlargement.Scale factor The multiplying factor for each linear measurement of an object when it is to be enlarged about a given centre of enlargement.The scale factor from the first figure to the second is always the reciprocal of the scale factor from the second figure to the first.If we were to increase the size of Triangle 1 by a scale factor of 2 it would double these dimensions to give us Triangle 2 which has length 16 and a height of 10.

### Reductions, Enlargements and the Scale Factor - PBworks

If the scale factor is positive, the image is larger than the object and on the same side of centre of enlargement as the object as the object.The larger the scale factor, the larger your cartoon will become.Reduction a decrease in the dimension of an object by consistent factor each dimension of this reduction is half the length of the original.An interactive animation illustrating enlargement of a right-angled triangle using a negative scale factor.

### Enlargement using a negative scale factor - absorblearning.com

Students learn how to perform and describe enlargements on a grid using a centre and scale factor.Learning progresses from enlarging shapes to a positive scale factor to fractional scale factors.If the scale factor is zero, then the shape will effectively disappear.Enlargement using a negative scale factor is equivalent to a rotated enlargement using a positive scale factor.Worksheet with example, basic practice and questions on coordinate grids.

### Scale factor area and perimeter | Tutorvista Answers

The scale factor may be expressed as a fraction, decimal, or percent.

Label the image C. (b) Enlarge shape B below by a scale factor.The booklet consists of a worked example for student notes and to teach students how to enlarge a shape by a given scale factor, find the centre of enlargement and calculate the scale factor.

Students need to understand the concept of scale factor as the amount of enlargement or reduction needed to create an object similar in shape but different in size to the given object and that scale.

Geogebra is used to demonstrate dynamic transformations of various objects with negative scale factors.If the scale factor is equal to 1, then the enlarged shape will be the same size in the same place.

GCSE Maths Revision Cards Double Pack Grade C and Grade B to A.Enlargement: Worksheets with Answers Whether you want a homework, some cover work, or a lovely bit of extra practise, this is the place for you.

### Mr Barton Maths

Enlarging Shapes on a Grid Description Students learn how to enlarge shapes objects on a grid using a centre and scale factor.

### GCSE Maths Revision Cards Double Pack Grade C and Grade B to A

If you begin with the smaller figure, your scale factor will be less than one.Scale can be expressed as a ratio fraction or percent it is a comparison between the actual size of an object.

If you are given two shapes and need to find the scale factor, you must know which one was the original and which one is the image or the new shape.

NOTE: Scale factor can be expressed as a decimaj or as a fraction.Side length of scale drawing Side length of original drawing Remember a fraction or decimal is okay Reductions, Enlargements and the Scale Factor The red square has side lengths of 3.If the scale factor, k, is greater than 1, the image is an enlargement (a stretch).

### Transformations GCSE revision and worksheets

The scale factor is a fraction so the scale drawing is a reduction, and the original card is 2 inches by 4 inches.After this lesson you will be able to calculate the scale factor in a scale drawing, and create a scale drawing with a given scale factor.