Respuesta :
Answer:
Option C - equilateral triangle is the right answer.
Step-by-step explanation:
A 30°-60°-90° is half of what other kind of triangle?
The answer is equilateral triangle.
An equilateral triangle can be split into two triangles measuring 30°-60°-90° triangles, by the altitude from any vertex.
The 30°-60°-90° triangle is a right triangle, where the other two acute angles are 30 and 60 degrees.