## Triangle Angle Theorems (proofs) - Section 4: Proving Our Theorems

Triangle Angle Theorems (proofs)

# Angles of a Triangle

Unit 3: Parallel Lines
Lesson 3 of 5

## Big Idea: Students learn about the different types of triangles, the relationships between the interior and exterior angles of a triangle, and apply their knowledge to numerical problems and constructions.

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16 teachers like this lesson
Standards:
Subject(s):
Math, Geometry, parallel lines, Similarity and Congruence, right triangle, triangle, equilateral, equiangular, Scalene, isosceles, acute triangle, obtuse triangle, remote interior angle, geogebra
90 minutes

### Beth Menzie

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