Are regular tessellations different from irregular tessellations?

Learning Intention: We are learning to develop our geometry knowledge. 
Success Criteria: I know I can do this when I explain that a tessellation is about covering a surface with a pattern of flat shapes.

Do you know what an obtuse angle is?

Learning Intention: We are learning to develop our knowledge of geometry.
Success Criteria: I know I can do this when I describe the different types of angles. 

Does 143° and 37° add up to a supplementary angle?

Learning Intention: We are learning to develop our knowledge of Geometry.
Success Criteria: I know I can do this when I describe what supplementary and complementary angles are.