Learn to find the missing angle outside of a circle with a secant and tangent line

The video tutorial covers the calculation of angles related to circles, focusing on angles formed inside, on, and outside the circle. It explains the formulas for finding these angles, such as using half the sum of arcs for angles inside the circle and half the difference of arcs for angles outside. The tutorial also demonstrates how to calculate specific arc measures and apply these formulas to solve problems, emphasizing the importance of understanding the relationships between arcs and angles in circle geometry.

What is the measure of an angle formed by two intersecting lines inside a circle?

• Twice the measure of the smaller arc

• Half the sum of the arcs

• The full measure of the larger arc

• Half the difference of the arcs

How do you calculate the measure of an angle formed by a point outside the circle?

• The full measure of the larger arc

• Twice the measure of the smaller arc

• Half the sum of the arcs

• Half the difference of the arcs

In the example provided, what is the measure of arc SW?

• 144 degrees

• 60 degrees

• 204 degrees

• 156 degrees

What is the total degree measure of a circle?

• 270 degrees

• 180 degrees

• 360 degrees

• 90 degrees

What is the final measure of angle U in the example calculation?

• 40 degrees

• 156 degrees

• 48 degrees

• 96 degrees