8.2.C.13 - Angle Sum of a Triangle - Exit Ticket

Last updated about 4 years ago

2 questions

If L1 ∥ L2 , and L3 ∥ L4 , what is the measure of ∠1?Explain how you arrived at your answer

Image #2

In image #2, given Line AB is parallel to Line CE.Present an informal argument to prove that the interior angles of triangle ABC have a sum of 180°.

From EngageNY.org of the New York State Education Department. Grade 8 Mathematics Module 2, Topic C, Lesson 13. Internet. Available from https://www.engageny.org/resource/grade-8-mathemat...; accessed 11/Nov/2015.