This GeoGebra Book is designed to help students explore and understand angle relationships through interactive activities. Students will investigate angles formed by transversal lines, including corresponding angles, alternate interior angles, and same-side interior angles. They will also explore angles formed by intersecting lines, such as complementary angles, supplementary angles, and vertically opposite angles. Through dynamic manipulation and observation, students are encouraged to identify patterns, make conjectures, and develop a deeper understanding of angle relationships.