Answer:
a. right, scalene
b. isosceles and acute
c. obtuse and scalene
Explanation:
A triangle with a 90 degree angle is a right triangle. Since none of the sides are marked as the same length, we can assume they are not equal, and therefore are scalene ( no sides the same length)
A triangle with 2 angles that are equal is an isosceles triangle. In this diagram, none of the angles appear to be larger than 90 degrees. If none of the angles are larger than 90 degrees, than the triangle is acute.
A triangle with with an angle larger than 90 degrees is an obtuse triangle. Since none of the sides are marked as the same length, we can assume they are not equal, and therefor are scalene ( no sides the same length)