A scale drawing of an object is the same shape at the object but a different size. The scale of a drawing is a comparison of the length used on a drawing to the length it represents. The scale is written as a ratio. The ratio of two corresponding sides in similar figures is called the scale factor Scale factor= length in image / corresponding length in object If one shape can become another using revising, then the shapes are similar. Hence, two shapes are similar when one can become the other after a resize, flip, slide or turn. In the photograph below showing the side view of a train engine. Scale factor is 1:200 This means that a length of 1 cm on the photograph above corresponds to a length of 200cm or 2 m, of the actual engine. The scale can also be written as the ratio of two lengths.If two similar triangles have a scale factor 5:3 which statement regarding the two triangles is true?
Question
a) The ratio of their perimeters is
15:1
b) Their altitudes have a ratio
25:15
c) Their medians have a ratio 10:4
d) Their angle bisectors have a
ratio 11:5
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Class 10 Maths
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2021-12-29T13:53:02+00:00
2021-12-29T13:53:02+00:00 1 Answer
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Answer: b)Their altitudes have a
ratio 25:15