If two polygons are similar, then the ratio of the lengths of any two corresponding sides is called the scale factor. This means that the ratio of all parts of a polygon is the same as the ratio of the sides.

If two polygons are similar, the ratio of their areas is equal to the square of the ratio of their corresponding sides. (Note that area is not a “length” measurement – it is a surface “area” measurement.)

The perimeter of a shape is the measure of the length of a shape around its outermost extremities. The ratio of the perimeter to the area of a shape is simply the perimeter divided by the area.

Squares are similar shapes because they always have four 90∘ angles and four equal sides, even if the lengths of their sides differ. Other shapes can be similar too, if their angles are equal.

Similarity is a quality of scaling: two shapes are similar if you can scale one to be like the other, like these triangles ABC and DEF. Since all circles are of the same shape (they only vary by size), any circle can be scaled to form any other circle. Thus, all circles are similar!

All circles of the same size are congruent to one another. “Size” can refer to radius, diameter, circumference, area, etc.

A circle is a set of points equidistant from a given point. The radius of a circle, /begin{align*}r/end{align*}, is the distance from the center of the circle to the circle. A circle’s size depends only on its radius. Two figures are similar if a similarity transformation will carry one figure to the other.

The Radius Around Point tool lets you plot a distance radius on a map. You specify the centre point, the radius and other features such as colour. You can then visualise the radius to see the area covered. The Area Calculator Tool lets you draw an area on the map and find the measurement of the area enclosed.

Draw a Route on Google Maps Alternatively zoom and drag the map using the map controls to pinpoint the start of your route. Draw your walking, running or cycling route by clicking on the map to set the starting point. Then click once for each of the points along the route you wish to create to calculate the distance.

Draw a path or polygon Open Google Earth. Go to a place on the map. To draw the line or shape you want, click a start point on the map and drag. Click an endpoint.

You can annotate your map using a variety of tools and content. You may drop placemarks wherever you want and select or import an appropriate icon. Each marker activates the ability to add text descriptions as well as images or videos. You can also annotate using drawing tools and directions made available by Google.

10 Free Tools to Create Your Own Maps

1. Map Chart. Map Chart is a tool that allows you to create professional-looking custom maps for your school or work project or presentation.
2. SnazzyMaps.
3. Mapme.
4. Maptive.
5. Animaps.
6. Scribble Maps.
7. Click2Map.
8. ZeeMaps.

Measure distance between points

1. On your computer, open Google Maps.
2. Right-click on your starting point.
3. Choose Measure distance.
4. Click anywhere on the map to create a path to measure.
5. Optional: Drag a point or path to move it, or click a point to remove it.
6. At the bottom, you’ll see the total distance in miles (mi) and kilometers (km).

To add a label, follow the steps below. Search for an address. Or drop a pin by tapping and holding a place on the map. At the bottom, tap the name of the place….

1. Open the Google Maps app .
2. Tap Saved.
3. Tap the label you want to edit.
4. At the bottom, tap the place’s name or address.
5. Tap Label.
6. Enter a new label name.