Triangle Solving Practice
Practice solving triangles.
You only need to know:
Try to solve each triangle yourself first, using pen and paper.
Then use the buttons to solve it step-by-step (more Instructions below).
- Look at the triangle and decide whether you need to find another angle using 180°, or use the sine rule, or use the cosine rule. Click your choice.
- The formula you chose appears, now click on the variable you want to find.
- The calculation is done for you.
- Click again for other rules until you have solved the triangle.
Note: answers are rounded to 1 decimal place.
What Does "AAS", "ASA" etc Mean?
It means which sides or angles we already know:
|Three Angles||Two Angles and a Side not between||Two Angles and a Side between||Two Sides and an Angle between||Two Sides and an Angle not between||Three Sides|