Question

Find the measure of angle 1.
refer to picture below.

Answer 1

The inscribed angle is half it's arc and the central angle is equal to its arc.

Answer 2

It is not 70

Answer 3

The inscribed angle is 20 so its arc is 40. The central angle, angle 1, has the same arc as the inscribed angle and the central angle is equal to its arc so angle 1 is 40

Answer 4

Woops, my bad

Answer 5

Would the upper triangle, if turned 180 degrees clockwise go on top of the lower triangle, so are the both the same triagles

Answer 6

so they are both the same triangles?*

Answer 7

It looks like it.