Setbacks, easements, and lot dimensions all need to be checked and communicated precisely, not eyeballed. Click the Measures button in the drawing toolbar and choose one of the following.

Check a lot, footprint, or setback zone against your site area without measuring it again. Click the polygon on the map to select it. The Summary app shows its Area and Perimeter in your project's units.

Select more than one polygon to see their combined area in the Summary app. Perimeter shows when you select a single polygon.

To see the area written on the polygon itself, select it and press V for Vertex Edit. The area label appears inside the shape.

Giraffe labels the size of a geometry you've drawn as soon as you select it, so you can check frontages and lot sizes at a glance. Which labels show depends on how you're editing.

When you click a geometry, the width and height of its selection box appear along the box's sides. These show the overall size of the selection. They don't show the length of each edge.

In Vertex Edit (press V or click Vertex Edit in the drawing toolbar), every edge of the geometry gets its own length label. Each polygon also shows its area inside the shape.

While you draw, Giraffe labels each edge as you place points, and shows the area once the shape has three or more points.

Tape measure and Tape measure (area) are spot-checks. They disappear once you click away.

Dimension (linear) and Dimension (area) stay on the canvas after you finish.

Dimension (linear) (or press Shift + D): click to place the first point, click for each additional point, then close it by clicking near your first point or pressing Space or Enter.

Dimension (area): click to place the first point, click again to set the width, then click a third time to finish.