Question

Please Find the measure of angle BAC

Answer 1

i know this property :)

the measure of an arc is equal to the measure of the central angle

the measure of an angle on the edge is equal to 1/2 the measure of the arc.

Answer 2

knowing this, what is the measure of the arc itself?

Answer 3

or we can simply combine these properties as:

the measure of the angle on the edge is equal to half the measure
of the central angle.

Answer 4

"the measure of the angle on the edge" --> inscribed angle

The measure of an inscribed angle of a circle is one-half the measure of its intercepted arc.