What triangles can you create using the red, green, and blue side lengths?
Adjust the lengths of the sides by dragging the endpoints.
Adjust the angles in the triangle by dragging the endpoints along the circles.

Triangles by Side Lengths
1. Create a scalene triangle.
A scalene triangle has no congruent sides.
2. Create an isosceles triangle.
An isosceles triangle has 2 congruent sides.
3. Create an equilateral triangle.
An equilateral triangle has 3 congruent sides.
Triangles by angle measure
4. Create an acute triangle.
An acute triangle has 3 acute angles.
5. Create a right triangle.
A right triangle has 1 right angle.
6. Create an obtuse triangle.
An obtuse triangle has 1 obtuse angle.
Triangle Combos
Can you create....
7. An acute triangle that is also scalene? isosceles? equilateral?
8. A right triangle that is also scalene? isosceles? equilateral?
9. An obtuse triangle that is also scalene? isosceles? equilateral?