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  • Subjects
  • Mathematics State Board
  • Class 7
  • Geometry

Exterior angles of a triangle

Theory

1. Exterior angle of a polygon
2. Forms of exterior angles of a triangle
3. Exterior angle property of a triangle

Exercises

1. Calculate the exterior angle

Difficulty: easy

2
2. Determine the exterior angle of right triangle

Difficulty: easy

3
3. Evaluate interior and exterior angles of a triangle

Difficulty: medium

4
4. Determine the angle in isosceles triangle

Difficulty: medium

4
5. Evaluate the unknown value

Difficulty: medium

4
6. Calculate the unknown angles

Difficulty: hard

5
7. Estimate the unknown value

Difficulty: hard

5

Tests

1. Training test

Difficulty: medium

13

Teacher content

1. Methodical recommendation

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