Character builds slowly, but it can be torn down with incredible swiftness.

Faith Baldwin

Today:Over Satellite WS10.3 InstructionPractice

GEOMETRY

Assignment:Satellite WS

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.

Helen Keller

GEOMETRY

10.3 INSCRIBED ANGLES

Objectives:o Know and use properties of

inscribed angleso Know and use properties of

inscribed polygons

Vocabulary: inscribed angle, intercepted arc, circumscribe

central angleInscribed

angle

B

C

A

D

Measure of an Inscribed Angle is half the measure of its intercepted arc.

If mC = 84°, find

the mD.

T

Q

R

If two inscribed angles of a circle intercept the same arc, then the angles are congruent.

S

C D If T and S

both intercept QR, then T

S. If mT = 4x – 20 and mS = 6x – 42, find mQR.

A

C

D

B

44°

30°

180°

Y

W

X

If a right triangle is inscribed in a circle, then the hypotenuse is a diameter of the circle.

c i rc le . th eo fd ia m e te r a is A C iff a n g le rig h t a is B

In D, if AB = 6 and AC = 12, find the m1 and m2.

c i rc le . th eo fd ia m e te r a is A C iff a n g le rig h t a is B1

D

A

C

B

2

Assignment:10.3 p617 #11-18, 41-43

10.3 INSCRIBED ANGLES

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.

Helen Keller

Character builds slowly, but it can be torn down with incredible swiftness.

Faith Baldwin

Today:Over Homework10.3 ContPractice

GEOMETRY

Assignment:10.3 p617 #11-18, 41-43

10.3 INSCRIBED ANGLES

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.

Helen Keller

Take out a piece of notebook paper and label it CHAPTER 10 HOMEWORK QUIZ.Write down the date (2/21), then write out p 617 #18 (INCLUDING PICTURE!!!), your work and your answer.

HOMEWORK QUIZ

Describe in a sentence the relationship between the mA and mB.

B

C

DA

10.3 INSCRIBED ANGLES REVIEW

D

E

G

A quadrilateral can be inscribed in a circle iff the opposite angles are supplementary.

F

C

D, E, F and G lie on some circle C iff mD + mF = 180° and mE + mG = 180°.

x°y°

85°

Given FG = 100

and EG is adiameter, findthe value of each

variable.

y = 6

Find the value of each variable.

C B

A

19y°

11y°

8x°

x = 163x+4

°

Assignment:10.3 p616 #4-8,

20-21 and p620 #1-9

10.3 ARCS AND CHORDS

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.

Helen Keller