An illustration shows angle A B C and ray B subscript 1 baseline C subscript 1 baseline. Rays B A and B C extend from vertex B indefinitely. Ray B subscript 1 baseline C subscript 1 baseline extends from point B subscript 1 baseline indefinitely.

Question

Soobin is making a copy of ∠ABC
and has drawn auxiliary ray B1C1
. Identify the next step she must do to continue constructing a copy of ∠ABC
.

(1 point)
Responses

Using a compass, measure the distance between points A
and C
.
Using a compass, measure the distance between points upper A and upper C .

Using a compass, draw an arc intersecting the auxiliary ray B1C1
.
Using a compass, draw an arc intersecting the auxiliary ray upper B subscript 1 baseline upper C subscript 1 baselin .

Using a straightedge, draw a ray starting at point B1
.
Using a straightedge, draw a ray starting at point upper B subscript 1 baseline .

Using a compass, measure the distance between points B
and C
.

Answer 1

To construct a copy of angle ∠ABC using the auxiliary ray B₁C₁, Soobin's next step should be:

Using a compass, draw an arc intersecting the auxiliary ray B₁C₁.

This step is crucial as it helps to mark the angle's measure on the new ray.