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?