When we are looking at an area that we simply can't capture in one image due to our maximum height limits, there are more options than just taking an angled shot.
We can produce blended or composite images as in the example below:
Which is actually constructed from 9 separate images...
The other option is to produce an orthomosaic, An orthomosaic is a photogrammetrically orthorectified image product mosaicked from an image collection, where the geometric distortion has been corrected and the imagery has been color balanced to produce a seamless mosaic dataset. A high number of matches/keypoints (more than 1000) is required to generate a model. This method handles all types of terrain, as well as large datasets. Distances are preserved and therefore the orthomosaic can be used for measurements.