# data[].attributes.attachment_link.entities[].name
Geometry Proofs | Congruent Triangles & CPCTC

# data[].attributes.attachment_link.title
Triangle Sum Theorem: Examples (Geometry Concepts)

# data[].attributes.attachment_link.title
Exterior Angle Theorem - MathHelp.com - Geometry Help

# data[].attributes.attachment_link.description
For a complete lesson on the exterior angle theorem, go to http://www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students are asked to solve word problems that involve the triangle sum theorem.