Lesson: Deductive Proof for Geometric Properties Mathematics • First Year of Preparatory School

Students will be able to

• prove that two vertically opposite angles are equal in measure,
• prove that the sum of all the angles around a point is ,
• prove other geometric properties using
  • vertically opposite angles,
  • angles around a point,
  • parallel lines and traversals,
  • angles in a triangle,
  • congruent triangles.