Enlargement using negative scale factor

PPT - Centre of enlargement PowerPoint Presentation - ID

A scale factor which to creates an image larger than the original is called an enlargement.If you need to revise this, return to Transformations: Enlargements.Scale factors, negative and fractional scale factors, centre of enlargement and anything else.The shape will also change size depending on the value of the enlargement.We already know how to draw an enlargement with a positive whole number scale factor.The above-mentioned fixed point S is called homothetic center or center of similarity or center of similitude.

The first number is called the ratio of magnification or dilation factor or scale factor or similitude ratio.

Dilation in Math: Definition & Meaning - Video & Lesson

The scale factor for an enlargement tells how much an object has been enlarged by.In this case, negative scale factors can be given, in which case the new distance is measured in the opposite direction from the centre of enlargement.

High School Geometry Common Core G.SRT.1 - Dilation

When we make things bigger using dilation we refer to that as an expansion or enlargement whereas if we use a dilation to make something smaller we use the term contraction or reduction.Students will also be given two similar cages, and must find the scale factor between the two.Corbettmaths - This video shows how to enlarge shapes with a negative scale factor.

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View, download and print Edexcel Gcse Mathematics (linear) - Enlargement: Negative Scale Factor pdf template or form online. 90 Gcse Maths Worksheet Templates are collected for any of your needs.

Geogebra is used to demonstrate dynamic transformations of various objects with negative scale factors.

Enlargement is when a shape is larger by a corresponding length to the original shape by a specific scale factor.

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An enlargement using a negative scale factor is similar to an enlargement using a positive scale factor, but this time the image is on the other side of the center of enlargement, and it is upside down.You can use Autograph to introduce students to the very basics of enlargement, and use the same process to take them right up to fractional and negative scale factors.

Enlargement – TutorPear beta

How to enlarge shapes with a negative scale factor from a given center of enlargement using construction lines.What happens to an enlarged image when the scale factor of enlargement is greater than one.GM e. Recognise reflection and rotation symmetry of 2-D shapes. GM l. Describe and transform 2-D shapes using single or combined rotations, reflections, translations, or enlargements by a positive, fractional or negative scale factor and distinguish properties that are preserved under particular transformations.

enlargement | mho maths

Enlarge 2-D shapes, given a centre of enlargement and a positive integer, negative or fractional scale factor, on paper and using ICT.An enlargement is a type of transformation that produces an image that could be bigger or smaller than the original but will retain the same side length ratio.In this case, negative scale factors can be given, in which case the new distance is measured in the opposite direction from the centre of enlargement, away from the original point.After a phase of instruction, requested by students using the regulatory cards, the students moved on to creating their own diagrams illustrating negative scale factors.

An enlargement is a transformation that produces an image that is the same shape as the original, but is a different size.Such a transformation can be called an enlargement if the scale factor exceeds 1.

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An interactive animation showing the planes of symmetry of a triangular-based prism.SUCCESS CRITERIA Identify centre of enlargement Identify scale factor Enlargement greater than 1 Enlargement less than 1 Enlargements that are negative.

Graphing Enlargements When a dilation in the coordinate plane has the origin as the center of dilation, you can find points on the dilated image by multiplying the x- and y-coordinates of the original figure by the scale factor.Since this scale factor is negative, our image will be a 180-degree rotation of the pre-image.

Just follow these steps and you’ll be OK at Enlargements

When the dilation is an enlargement, the scale factor is greater than 1.As learning progresses they are challenged to find the centre of enlargement and negative scale factor.For example, if the length of a shape is 2x the length of the original shape, it has an enlarged scale factor of 2.

Because absolute values are always positive, the absolute value of this scale factor is positive 2, causing our image to be twice as large as the pre-image.The question is based on a series of GCSE enlargement by negative scale factor questions that can be downloaded here: This particular question asks for triangle A to be enlarges by a scale factor of -1.5 through 0 (the centre of origin).If the scale factor, k, is greater than 1, the image is an enlargement (a stretch).Scale Factor 2 If the scale factor is between 0 and 1, the image is a reduction (a shrink).Home Layout Tables Charts SmartArt Formulas Data abc Wrap Text Genera Sea.ch in Sheet Normal Fill Clear calibri (Body) Paste Corditional Insert Delete Format Themes.The scale factor of enlargement is the number that all the original lengths are multiplied by to produce the image.