Question

Which of the following groups of angles can be trisected using only a

compass and straightedge?

A. All angles less than 180°
B. All angles greater than 180°
C. All acute angles
D. All right angles


can someone actually answer this please like cmon i know someone knows the answer smh

Answer 1

D. All right angles

Explanation:

Angle trisection with compass and straightedge is a famous unsolvable problem.

Fortunately, right angles need to be trisected into 3 times 30deg, and a 30deg angle can be constructed, e.g. by constructing a equilateral triangle and bisecting one of its angles (bisection is always doable).

Answer 2

all angles less than 180