Nimo

Study smarter with Nimo

Personalised revision that adapts to you. Ace your revision with unlimited practice questions that are designed to help you learn faster. We're slowly rolling out to more and more students.

Try Nimo

Understanding angle facts and polygon sums

Geometry and measures • Properties and constructions

Key concepts

What you'll likely be quizzed about

  • When two parallel lines are crossed by a transversal, several angle relationships emerge.
  • Corresponding angles are equal, alternate angles are equal, and consecutive interior angles are supplementary, meaning they sum to 180 degrees.
  • These relationships allow for the identification of unknown angles when a transversal intersects the parallel lines.

Flashcards

Test your knowledge with interactive flashcards

What is the sum of the interior angles of a triangle?

Click to reveal answer

The sum of the interior angles of a triangle is 180 degrees.

Key notes

Important points to keep in mind

Corresponding angles are equal

Alternate angles are equal

Interior angles of a triangle sum to 180 degrees

To find polygon angle sums, use (n-2) × 180°

Consecutive interior angles are supplementary

Built with v0