Vocabulary Entry

diagonal

|noun • adjective

noun

A straight line joining two opposite corners of a polygon or a polyhedron.

Example Sentences

"The diagonal of a square is longer than the side lengths."

"In geometry class, we learned how to calculate the length of a diagonal."

"The architect used diagonal lines to create a unique design."

adjective

Example Sentences

"The diagonal stripes on the shirt gave it a modern look."

"She drew a diagonal line across the paper."

"The diagonal approach to problem-solving can often yield innovative solutions."