W2Do Now Monday

What type of angle is formed when the vertex is on the circumference of a circle?

• Central angle

• Inscribed angle

• Interior angle

• Exterior angle

What is the measure of an angle formed by two chords that intersect at the circumference of the circle?

• Equal to the intercepted arc

• Half the measure of the intercepted arc

• Equal to half the sum of the intercepted arcs

• Twice the measure of the intercepted arc

If an angle is inscribed over a diameter of a circle, what is its measure?

• 180 degrees

• 90 degrees

• 360 degrees

• 45 degrees

How can you determine the measure of an inscribed angle?

• Multiply the measure of the intercepted arc by two

• Divide the measure of the intercepted arc by two

• Subtract 90 degrees from the measure of the intercepted arc

• Add 90 degrees to the measure of the intercepted arc

What is the sum of the measures of all angles in any quadrilateral?

• 180 degrees

• 360 degrees

• 450 degrees

• 270 degrees

What is the relationship between the angles at opposite vertices in a quadrilateral inscribed in a circle?

• They are none of the above

• They are equal

• They are supplementary

• They are complementary

Find the value of x

• 67

• 80

• 33

• 213

Why is angle ABC + angle ADC = 180⁰ ?

• angles in opposite segments are supplementary

• angles in same segment

• angle at centre is twice angle at circumference

• sum of angles on a straight line

Why is angle BAC =90⁰ ?

• tangents to circle

• tangents to circle from external point

• right angle in semi-circle

• angles in same segment

What is the value of x?

• x = 160
• x = 40
• x = 80
• x = 360