106 Geometry Problems

Choosing the right tool (Synthetic, Analytic, or Trigonometric) for the job. 2. Structure: From Introductory to Advanced

You can find more details or purchase the collection through AwesomeMath or the American Mathematical Society Bookstore . 106 geometry problems

(DE \parallel AB) gives (\triangle CDE \sim \triangle CBA). So (CE/EA = CD/DB)? Wait – check: Actually ( \triangle CDE \sim \triangle CBA) → (CE/CA = CD/CB = DE/AB). Choosing the right tool (Synthetic

Suddenly, the page is no longer flat. It is a topography of thought. 106 geometry problems

In (\triangle ABC), (D) is on (BC) such that (AD) is angle bisector. (E) is on (AC) such that (DE \parallel AB). Prove that (AE = EC).

The point: you will often take wrong turns – that’s fine. Trace back and re-read.