lesson Write a review • 110 Downloads lesson 110 Downloads Write a review Geogebra proving the angles of a triangle Share Share On Facebook Share On Twitter Share On Pinterest Share On LinkedIn Share On Microsoft Teams Email Copy link Share Share On Facebook Share On Twitter Share On Pinterest Share On LinkedIn Share On Microsoft Teams Email Copy link samwelli Subject Math — Geometry Grade Level Grades 9-12 Resource Type Activity License About Resources Reviews Related About This Lesson An activity creating a triangle using geogebra.<BR> Keywords: Interior and Exterior angle theorom Resources Files anglesum_geogebra.docx Activity February 12, 2020 88.14 KB Log in to Download Log in to Download Reviews Be the first to submit a review! Advertisement More from this Contributor Lesson Graphing a Heart: Valentine's Day Algebra Activity • Grades 9-12 samwelli Lesson Education and Median Salary Activity • Grades 6-12 samwelli Lesson Bell Ringer - Best Fit Curves - Speed and length Activity • Grades 9-12 samwelli Lesson Movies for Global Studies Activity • Grades 9-12 samwelli Lesson Probability on the TI84 graphing calculator Handout, Worksheet • Grades 6-12 samwelli Lesson Algebra 2 & Trigonometry Review Statistics Review Activity • Grades 9-12 samwelli