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Theory

 1 Basic terms and definitions, and axioms on pair of angles 2 Theorem supporting vertically opposite angles 3 Axioms supporting parallel lines and a transversal 4 Theorems supporting parallel lines and a transversal 5 Theorem supporting lines parallel to the same line 6 Theorems supporting angle sum property of a triangle

Exercises

 1 Choose the correct statements Difficulty: easy 3 2 Find the unknown angle Difficulty: easy 2 3 Find the unknown Difficulty: medium 4 4 Find the value of the unknown variable Difficulty: medium 1 5 Find the angle Difficulty: medium 3 6 Find the value of a, b, and c Difficulty: medium 3 7 Find the value of 'p' Difficulty: medium 5 8 Find the angles in the triangle Difficulty: medium 3 9 Find the required angle of the triangle Difficulty: medium 3 10 Find the specified angles Difficulty: hard 5 11 Find angle 'OPQ' Difficulty: hard 5

Tests

 1 Training test Difficulty: medium 10

Teacher manual

 1 Methodical recommendation