# How do you find scale factor of a triangle?

## How do you find scale factor of a triangle?

Divide one of the sides in the bigger triangle by its corresponding side in the smaller triangle to determine the scale factor for the smaller triangle to the bigger triangle. In the example, if you divided 40 by 20 you would get a scale factor of 2.

What is the scale factor?

The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii. The scale factor states the scale by which a figure is bigger or smaller than the original figure.

### How do you calculate a scale factor?

The basic formula that is used for calculating the scale factor is, Scale factor = Dimension of the new shape ÷ Dimension of the original shape. In case, if the original figure is scaled up, the formula is written as, Scale factor = Larger figure dimensions ÷ Smaller figure dimensions.

What is the scale factor of 4?

The scale factor is the ratio of the length of a side of one figure to the length of the corresponding side of the other figure. Here, XYUV=123=4 . So, the scale factor is 4 . Note that when a two-dimensional figure is enlarged ( dilated ) by a scale factor of k , the area of the figure is changed by a factor of k2 .

## How do you enlarge a triangle by a scale factor of 2?

Example

1. Enlarge the triangle ABC by a scale factor of 2 about the centre of enlargement O.
2. First, draw ray lines from O to each corner of the triangle and extend them.
3. Next, measure the distance from O to each corner of ABC.
4. Finally, join up the points A’ B’ C’

What is the scale factor of 1 3?

A scale factor of 1:3 means that one triangle is 3 times bigger than the other, for example. So, if the small triangle has a perimeter of 27, the big triangle has a perimeter 3 times as big.

### How do you figure out the ratio of a triangle?

– You will commonly see ratios represented using words (as above). Because they are used so commonly and in such a variety of ways, if you find yourself working outside of – Ratios are frequently expressed using a colon. – Ratios are also sometimes expressed using fractional notation.

How can I find the square footage of a triangle?

Rectangle

• Rectangle Border
• Circle
• Ring
• Triangle with Edge Lengths
• Triangle with Base&Height
• Trapezoid
• Sector
• Parallelogram
• Reference:
• ## What is the scale factor of these two triangles?

The scale factor of these similar triangles is 5 : 8. Example 3: The perimeters of two similar triangles is in the ratio 3 : 4. The sum of their areas is 75 cm 2. Find the area of each triangle. If you call the triangles Δ 1 and Δ 2, then . According to Theorem 60, this also means that the scale factor of these two similar triangles is 3 : 4.

How do you calculate the square feet of a triangle?

– Divide the space into smaller sections. – Measure each section separately and calculate the square footage of each. – Use a calculator to add the numbers together to get the total square footage.