Classifying angles in triangles and shapes is the main focus of this engaging geometry math mystery for Grade 3, Grade 4, and Grade 5 students. Through a detective-style investigation, students work with types of angles in a triangle, solve missing angles on a line segment, identify parallel and perpendicular line segments, explore right angles in clockwise and anticlockwise directions, and investigate the properties of 3D shapes and objects. Perfect for May 4th. In this CSI-style geometry activ