In this Grade 6 lesson from Reveal Math, Course 1, students learn how to create a net to represent a triangular prism and use that net to calculate surface area. The lesson covers identifying the two congruent triangular bases and three rectangular faces of a right triangular prism, applying the triangle area formula A = ½bh, and adding all face areas to find the total surface area. Part of Module 9: Volume and Surface Area, the lesson builds students' understanding of three-dimensional figures through both drawing and computation.
Section 1
Anatomy and Net of a Triangular Prism
A triangular prism is a 3D solid with exactly 5 faces: two congruent (identical) triangular bases and three rectangular lateral (side) faces. When you unfold a triangular prism to create its 2D net, it typically looks like three rectangles joined side-by-side in a row, with two triangles attached to opposite sides of the central rectangle.
Expand to review the lesson summary and core properties.
Section 1
Anatomy and Net of a Triangular Prism
A triangular prism is a 3D solid with exactly 5 faces: two congruent (identical) triangular bases and three rectangular lateral (side) faces. When you unfold a triangular prism to create its 2D net, it typically looks like three rectangles joined side-by-side in a row, with two triangles attached to opposite sides of the central rectangle.