To trisect a(n) angle, you first construct an equilateral triangle. a) acute b) right c) obtuse d) 120- degree

Option B - right angle

Step-by-step explanation:

We have Given statement : To trisect a(n) angle, you first construct an equilateral triangle.

Solution: Option B is correct because,  a right angle is 90 degrees and an equilateral triangle has a 60 degree corner.

So, if you construct the equilateral you have one 60 and one 30, now bisect the 60.