Angles
Exactly 90 degrees
right angle
A triangle with a side with exactly 90 degrees
right triangle
acute angle
A triangle with two sides that are the same
Isosceles triangle
Exactly 180 degrees
straight angle
All sides are different
Scalene triangle
More than 90 degrees but less than 180 degrees
obtuse angle
All sides are equal
Equilateral triangle
When you add all sides, you get 180 degrees
triangle
What does congruent mean
equal