The measure of the central angle is the measure of the circumference angle.

Twice.

Step-by-step explanation:

It is 2 times the measure of the angle at the circumference.

Step-by-step explanation:

The measure of the central angle is twice the measure of the circumference angle.

(twice/always twice/double/always double/two-times/always two-times)

The Central Angle Theorem states that the measure of the inscribed angle at the circumference is always half the measure of the central angle.

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%