Constructing SAS Triangles

Two sides and an angle ... a triangle it makes. Given the measure to two sides and the angle between them, the narrator of a short video shows how to draw a triangle with a ruler and protractor. Pupils use handouts to practice the newly learned skill.

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CCSS: Adaptable
Instructional Ideas

  • Lead a discussion on whether each student drawing will be the same
  • Conduct a lesson on making true constructions using the same information
Classroom Considerations

  • Independent practice covers multiple ways to construct triangles
Pros

  • Contains space on the handouts for constructions
  • Uses QR codes to connect handouts to the website
Cons

  • None
Common Core