Formula deep page
Sum of angles in quadrilateral
∠A + ∠B + ∠C + ∠D = 360°
This formula belongs to the chapter "Basic Geometrical Ideas" in Class 6 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
If three angles are 90°, 90°, 100°: fourth = 360-280 = 80°