Formula deep page
Angle sum in triangle
∠A + ∠B + ∠C = 180°
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
Angles 50°, 70°: third = 180-120 = 60°