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YouTube

How to Write Geometry Proofs: A Step-by-Step Guide for Beginners

Krista King via YouTube

Syllabus

0:20 — Anatomy of a proof two-column structure + reason types
0:47 — 4 foundational rules: Diagram ≠ Evidence; Equality vs Congruence
3:49 — Reason bank starter list you can cite
4:59 — Goal tree: How to pick your next step backward planning
5:57 — Algebraic proof your training wheels
7:41 — Segment addition proof
9:19 — Midpoint proof
10:04 — Angle bisector proof
11:12 — Linear pair proof
12:00 — The anchor proof solved midpoint + algebra, line by line
13:43 — Same proof, flowchart and paragraph formats

Taught by

Krista King

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