Unlocking the Secrets of Triangle Angle Sum
TL;DR: The interior angles of any triangle sum to 180 degrees. This rule, the Triangle Angle Sum Theorem, is one of the most useful facts in geometry. Once you know two angles, the third is automatic; once you know one angle, the other two have a clean constraint to work with. Key takeaways: The three […]
Time Travel Adventure: How to Perform Indirect Measurement in Similar Figures
TL;DR: Ever wanted to know the height of a tree without climbing it? Indirect measurement is exactly that trick, finding a distance you can’t reach directly by using similar figures and a measurement you can take. If two triangles are similar, their matching sides stay in the same ratio. Measure something accessible (like your own […]
