The first topic in Geometry 11 is an overview of lines and planes, which serves as a foundation for studying the properties of shapes in space. Drawing space figures and determining which lines in space are discontinuous, continuous, or intersecting will be difficult for the students. The intersection of lines and planes is a key part for students to understand while solving geometric problems in space. This study uses GeoGebra dynamic math software to show how to determine the intersection of two planes, as well as the intersection of a line and a plane