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Q: Describe how you redraw a scale drawing with a new scale?
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How can you use scale factor to find a new perimeter and area?

New perimeter = old perimeter*scale factor New area = Old area*scale factor2


How do you draw New York?

get a paper and a pencil and just start drawing


Transformation that enlarges or reduces a figure?

Scaling changes the size of a figure. If the scale factor is greater than 1, the figure is enlarged; if the scale factor is less than 1, the figure is reduced. I the scale factor is equal to 1, the figure's size is unchanged. If there is a centre of enlargement, the new figure can be drawn exactly by multiplying the distance of every point from the centre of enlargement, multiplying this by the scale factor and drawing the new point at this distance from the centre of enlargement. (For a polygonal figure, only the vertices need be measured and the lines between the vertices of the original figure drawn in). With a centre of enlargement, the scale factor can be negative. In this case, the distance to the new points is measured on the opposite side of the centre to the original points, so that it is a straight line form the original point, through the centre to the new point.


How do you enlarge a shape with a sf?

Redraw the same shape with multiplying each length of the shape by the scale factor.If you are enlarging through a centre of enlargement, measure the distance from each point (vertex) to the centre and continuing on a straight line through the centre, measure that distance multiplied by the scale factor and plot the point there, drawing in the lines of the shape.When doing this on squared paper, the measurement of the distance can often be easily done by counting the squares horizontally and vertically from the point to the centre, and count each of these values multiplied by the scale factor on the other side of the centre point.For example, a point (1, 0) enlarged by a scale factor of 2 through the centre (2, 3) would be plotted at:Horizontal distance is 2 - 1 = 1 squares, times 2 = 2 squares horizontally beyond (2, 3) which makes the new x co-ordinate 2 + 2 = 4Vertical distance is 3 - 0 = 3 squares, times 2 = 6 squares vertically beyond (2, 3) which makes the new y co-ordinate 3 + 6 = 9Making (1, 0) → (4, 9)


What does the scale factor between two similar figures tell you about the given measurement perimeters?

Perimeter will scale by the same factor. Area of the new figure, however is the original figures area multiplied by the scale factor squared. .