### Theory

 1 Basic geometry concepts: Lines 2 Basic geometry concepts: Pairs of lines 3 Basic geometry concepts: Angles 4 Basic geometry concepts: Pairs of Angles 5 Basic geometry concepts: Adjacent angles

### Exercises

 1 Line, line segment and rays Difficulty: easy 1.5 2 Line, line segment and rays Difficulty: medium 3 3 Angles : Different types Difficulty: easy 2 4 Classify the angles Difficulty: medium 2 5 Angles: Different types Difficulty: medium 7 6 Complementary angles Difficulty: medium 3 7 Supplementary angles Difficulty: medium 3 8 Complementary and supplementary angles Difficulty: easy 5 9 Complementary and supplementary angles Difficulty: easy 2 10 Marina Copy of Complementary and supplementary angles Difficulty: easy 2 11 Vertically opposite Angles Difficulty: easy 3 12 Vertically opposite angles Difficulty: medium 2 13 Adjacent angles Difficulty: medium 2 14 Adjacent angles Difficulty: easy 2 15 Find out the missing angle Difficulty: hard 1 16 Adjacent angles Difficulty: easy 3

### Tests

 1 Line,line segment, ray and different types of angles Difficulty: easy 12 2 Complementary and supplementary angles Difficulty: easy 6 3 Vertically opposite angles and adjacent angels Difficulty: easy 5

### Teacher manuals

 1 Methodical recommendation