1st/2nd Honors Geometry Skinny

What

1st/2nd Honors Geometry Skinny

When

9/19/2022

MGSE.9-12.G.CO.10: Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180 degrees, base angles of isosceles triangles are congruent, the segment joining midpoints of two sides of a triangle is parallel to the 3rd side and half the length, medians of a triangle meet at a point.

Learning Targets /Success Criteria:
--I can prove the measures of interior angles of a triangle sum to 180 degrees.
--I can use the Triangle Sum Theorem to find missing angles of a triangle.
--I can identify exterior and interior angles.
--I can use the Exterior Angle Theorem to solve for missing variables and angles of a triangle.

Activator/Connection (Bellringer): Students will complete Triangle Inequalities Bellringer (attached below).

Direct Instruction/Guided Practice:
--review bellringer
--Guide students in completing Angle Theorems for Triangles foldable.


Independent Practice/Collaboration/Differentiation;
--Differentiation: Graphic organizers and foldables. Provide one-one-one help to students needing extra guidance provide enrichment problems for those students that understand the material quickly.


Summarizer/CFU: asked students to discuss when they use the Triangle Sum theorem and when they would use the Exterior Angle Theorem.


Assignment: students will complete Triangle Sum & Exterior Angle w/s (attached below).