This resource material is designed for primary grade level whose lesson is all about Triangles and Quadrilaterals. In addition, this resource material is consists of detailed information about the properties of Triangles and Quadrilaterals with some practice exercises. on finding the unknown angles. Hi co educators, I hope you will like it. I really appreciate if you post your comments or reviews , share and like this original resource material of mine. That way, I will be more motivated to make more detailed presentations for your classroom use. Let me know what lesson would you like me to create as my content. Looking forward for your response. Thank you. Lyn