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Lesson 7.4. Conjectures Geo Sketchpad C-68 The measure of an inscribed angle in a circle is half the measure of the arc it intercepts.

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Presentation on theme: "Lesson 7.4. Conjectures Geo Sketchpad C-68 The measure of an inscribed angle in a circle is half the measure of the arc it intercepts."— Presentation transcript:

1 Lesson 7.4

2 Conjectures Geo Sketchpad

3 C-68 The measure of an inscribed angle in a circle is half the measure of the arc it intercepts.

4

5 C-69 Inscribed angles that intercept the same arc are congruent.

6

7 C- 70 Angles incribed in a semicircle are right angles.

8 C-71 The opposite angles of a quadrilateral inscribed in a circle are supplementary.

9 A + C = 180 B + D = 180

10 Cyclic quadrilateral - A quadrilateral incribed in a circle.

11 C-72 Parallel lines intercept congruent arcs on a circle.

12 Find the value of x. 127 O x

13 Find the value of x. 132 O 92 O x y

14 Find the value of x. 73 O 98 O x y

15 Find the degree measure of 53 O x A B C

16 Find the degree measure of 53 O x A B C

17 Find the degree measure of 104 O D A B C

18 Find the value of y. 73 O 98 O x y

19 Find the degree measure of 26 O A B C

20 Find the degree measure of 104 O D A B C

21 Find the degree measure of 26 O A B C

22 Find the degree measure of 26 O A B C D

23 Find the value of x 35 O A B C x y

24 Find the value of y 35 O A B C x y

25 Find the degree measure of 19 O A B C D

26 A B C

27 A B C

28 A B C D

29 Find the degree measure of 75 O A B C

30 Find the degree measure of 40 O A B C D

31 Find the degree measure of 40 O A B C D 32 O

32 Find the measure of 73 O 98 O x y A B C D

33 Find the value of 132 O 92 O x y A B C D

34 Find the value of 35 O A B C x y

35 Find the value of x.

36 Find the value of y.

37 Find the value of z.

38 Homework 7.4 p. 346 #1-15


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