Learning Goal: Build understanding of how to find all 4 types of points of concurrency.
Classwork
 Estimation 180 – Day 224 (Andrew Stadel)
 Warm Up
 Card Matching
 Practice
 Ungraded Formative Assessment
Standards:

 Common Core
 HSG.CO.C.10 – Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.
 Common Core
 TEKS
 G.6(D) – verify theorems about the relationships in triangles, including proof of the Pythagorean Theorem, the sum of interior angles, base angles of isosceles triangles, midsegments, and medians, and apply these relationships to solve problems