Download presentation
Presentation is loading. Please wait.
1
Splash Screen
2
Five-Minute Check (over Lesson 10–5) NGSSS Then/Now New Vocabulary
Theorem 10.12 Example 1: Use Intersecting Chords or Secants Theorem 10.13 Example 2: Use Intersecting Secants and Tangents Theorem 10.14 Example 3: Use Tangents and Secants that Intersect Outside a Circle Example 4: Real-World Example: Apply Properties of Intersecting Secants Concept Summary: Circle and Angle Relationships Lesson Menu
3
A B Determine whether BC is tangent to the given circle. A. yes B. no
___ A. yes B. no A B 5-Minute Check 1
4
A B Determine whether QR is tangent to the given circle. A. yes B. no
___ A. yes B. no A B 5-Minute Check 2
5
Find x. Assume that segments that appear to be tangent are tangent.
C. 12 D. 13 A B C D 5-Minute Check 3
6
Find x. Assume that segments that appear to be tangent are tangent.
C. 20 D. A B C D 5-Minute Check 4
7
A B C D SL and SK are tangent to the circle. Find x. A. 1 B. C. 5
___ A. 1 B. C. 5 D. 44 __ 5 2 A B C D 5-Minute Check 5
8
MA.912.G.6.4 Determine and use measures of arcs and related angles.
MA.912.G.6.2 Define and identify: circumference, radius, diameter, arc, arc length, chord, secant, tangent and concentric circles. MA.912.G.6.4 Determine and use measures of arcs and related angles. Also addresses MA.912.G.6.3. NGSSS
9
You found measures of segments formed by tangents to a circle
You found measures of segments formed by tangents to a circle. (Lesson 10–5) Find measures of angles formed by lines intersecting on or inside a circle. Find measures of angles formed by lines intersecting outside the circle. Then/Now
10
secant Vocabulary
11
Concept
12
A. Find x. Theorem 10.12 Substitution Simplify. Answer: x = 82
Use Intersecting Chords or Secants A. Find x. Theorem 10.12 Substitution Simplify. Answer: x = 82 Example 1
13
B. Find x. Step 1 Find mVZW. Theorem 10.12 Substitution Simplify.
Use Intersecting Chords or Secants B. Find x. Step 1 Find mVZW. Theorem 10.12 Substitution Simplify. Example 1
14
WZX = 180 – VZW Definition of supplementary angles
Use Intersecting Chords or Secants Step 2 Find mWZX. WZX = 180 – VZW Definition of supplementary angles x = 180 – 79 Substitution x = 101 Simplify. Answer: x = 101 Example 1
15
Subtract 25 from each side.
Use Intersecting Chords or Secants C. Find x. Theorem 10.12 Substitution Multiply each side by 2. Subtract 25 from each side. Answer: x = 95 Example 1
16
A. Find x. A. 92 B. 95 C. 98 D. 104 A B C D Example 1
17
B. Find x. A. 92 B. 95 C. 97 D. 102 A B C D Example 1
18
C. Find x. A. 96 B. 99 C. 101 D. 104 A B C D Example 1
19
Concept
20
Substitute and simplify.
Use Intersecting Secants and Tangents A. Find mQPS. Theorem 10.13 Substitute and simplify. Answer: mQPS = 125 Example 2
21
B. Theorem 10.13 Substitution Multiply each side by 2. Answer:
Use Intersecting Secants and Tangents B. Theorem 10.13 Substitution Multiply each side by 2. Answer: Example 2
22
A. Find mFGI. A. 98 B. 108 C D A B C D Example 2
23
B. A. 99 B C. 162 D. 198 A B C D Example 2
24
Concept
25
A. Theorem 10.14 Substitution Multiply each side by 2.
Use Tangents and Secants that Intersect Outside a Circle A. Theorem 10.14 Substitution Multiply each side by 2. Example 3
26
Subtract 141 from each side.
Use Tangents and Secants that Intersect Outside a Circle Subtract 141 from each side. Multiply each side by –1. Example 3
27
B. Theorem 10.14 Substitution Multiply each side by 2.
Use Tangents and Secants that Intersect Outside a Circle B. Theorem 10.14 Substitution Multiply each side by 2. Example 3
28
Use Tangents and Secants that Intersect Outside a Circle
Add 140 to each side. Example 3
29
A. A. 23 B. 26 C. 29 D. 32 A B C D Example 3
30
B. A. 194 B. 202 C. 210 D. 230 A B C D Example 3
31
Theorem 10.14 Substitution Apply Properties of Intersecting Secants
Example 4
32
Subtract 96 from each side.
Apply Properties of Intersecting Secants Multiply each side by 2. Subtract 96 from each side. Multiply each side by –1. Example 4
33
A. 25 B. 35 C. 40 D. 45 A B C D Example 4
34
Concept
35
End of the Lesson
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.