# data[].attributes.headline
How to determine if a shape is a triangle 

# data[].attributes.subject
How to determine if a shape is a triangle 

# data[].attributes.headline
Ordering Angle Measurements based on side lengths

# data[].attributes.subject
Ordering Angle Measurements based on side lengths

# data[].attributes.attachment_link.entities[].name
Range for Third Side of Triangle Example

# data[].attributes.attachment_link.title
5.5: Ordering Angles by Size Given Side length