A mathematics textbook covering geometry and triangle calculations. - Title: New Studies in Mathematics - Edition: Revised Edition - Target Grade Level: For the Reiwa 6th Year (2024 Academic Year) - Contents: Geometry, triangles, angle calculations, etc. - Number of Pages: Detailed explanations and problem sets There are no written answers in the problem set. As shown in the photos, pencil marks are on the problem numbers that were considered important. I couldn't find any use of highlighters. The name section will be blacked out for the listing. Thank you for viewing.