Section One
Triangle Classification-By Angle Measure
Acute Triangle: Three acute angles.
Equiangular Triangle: Three congruent acute angles.
Right Triangle: One right angle.
Obtuse Triangle: One obtuse angle.
Triangle Classifications-By Side Lengths
Equilateral Triangle: Three congruent sides.
Isosceles Triangle: At least two congruent sides.
Scalene triangle: No congruent sides
Acute Triangle: Three acute angles.
Equiangular Triangle: Three congruent acute angles.
Right Triangle: One right angle.
Obtuse Triangle: One obtuse angle.
Triangle Classifications-By Side Lengths
Equilateral Triangle: Three congruent sides.
Isosceles Triangle: At least two congruent sides.
Scalene triangle: No congruent sides