Formula deep page
Exterior angle theorem
Exterior angle = sum of opposite interior angles
This formula belongs to the chapter "Triangles and Its Properties" in Class 7 Mathematics. Use it after identifying the right variables, matching the chapter context, and writing the substitution clearly.
How to use it
- Identify the quantity you need to find.
- Check the related variables and units from the question.
- Substitute values carefully into the formula.
- Simplify step by step and write the final statement.
Worked cue
Interior angles 65° and 75°: exterior angle = 65+75 = 140°