Writing a Two-Column Proof Try it
Given: ZABC = ZDEF and
Angles Reasons
ZGHI E ZDEF
given
Prove: m ABC = mZGHI
symmetric property
x
transitive property
definition of angles
Statements
Reasons
✓ 1. ZABC ZDEF
1. given
2. ZGHI ZDEF
2. given
Demo 1
Intro

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by