5.7: Proving Quadrilateral Properties

Bellringer: Homework 5.3, exercise 6

=2a + 1

By the Triangle Inequality theorem, the sum of any two sides of a triangle is greater than the third side.

(a) + (2a + 1) > 𝟑𝟒 3a + 1 >34 3a > 𝟑𝟑 a> 𝟏𝟏

11

opposite

a d j a c e n t

Bellringers

5.7: Proving Quadrilateral Properties

Same segment

Write a paragraph proof

Homework: Workbook 5.7 Gizmos: Due 1/26 & 1/27 1. Classifying Quadrilaterals 2. Special parallelograms