Practice 12-1 through 12-4

The triangle circumscribes the circle. Lines that appear tangent are tangent. Find the perimeter of the triangle.

• 70 ft

• 140 ft

• 120 ft

• 80 ft

Tags

CCSS.3.MD.D.8

The triangle circumscribes the circle. Lines that appear tangent are tangent. Find the perimeter of the triangle.

• 92 cm

• 46 cm

• 18 cm

• 22 cm

Tags

CCSS.3.MD.D.8

How can you prove that HI is tangent to the circle WITH THE INFORMATION YOU ARE GIVEN.

• Use the Pythagorean Theorem.

• Angle GHI is 29 degrees.

• Angle GHI is a right angle because 180-29-61=90 degrees.

In the diagram at the right, ST is a diameter of the circle and ST is perpendicular to QR . What conclusions can you

make? (Multiple answers are correct.)

• SU = UT

• arc QT = arc TR

• segment QU = segment UR

Solve x.

• 8

• 4

• 16

• 2

Tags

CCSS.HSG.C.A.2

Solve x.

• 8

• 11.7

• 10

• 6

Tags

CCSS.HSG.C.A.2

Find the missing variable.

• 50

• 25

• 15

• 12.5

Tags

CCSS.HSG.C.B.5

Find the missing variable.

• 90

• 180

• 45

• 30

Tags

CCSS.HSG.C.A.2

If angle ACB= 40 degrees, what is the measure of arc AB?

• 40

• 20

• 80

• 90

Tags

CCSS.HSG.C.A.2

Find the missing variable. C is the center of the circle. (Remember: a straight line is 180 degrees)

• x = 15 degrees

• x = 85 degrees

• x = 45 degrees

• x = 95 degrees

Tags

CCSS.HSG.C.A.2