Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to ...

The three angles in any triangle add up to 180°. You can use this information to find a missing angle. A scalene triangle has three different angles. To find a missing angle you need to know the other ...

The three angles in a triangle add up to \(180^\circ\). If two of the angles are known then the third can be calculated by following these steps: Add the two known angles together. Subtract the total ...