Images from the website: http://www.regentsprep.org/regents/math/geometry/gp15/circleangles.htm Slide share that separates the images and information into one slide at a time.

1. CIRCLES!
W H A T F O R M U L A S D O Y O U N E E D T O K N O W ?

2. T H A N K S T O T H E A W E S O M E W E B S I T E
W W W . R E G E N T S P R E P . O R G , F O R T H E S E
W O N D E R F U L E X P L A N A T I O N S !
In Module 9, we will be learning all about Circles.
• Arcs (Major, Minor, Semi-circle)
• Chords (Segments)
• Sectors
• Angles
• Tangents and Secants
There are a few formulas that will help us along the way.
Let’s take a look at those now.

3. C E N T R A L A N G L E S H A V E T H E I R V E R T E X A T
T H E C E N T E R O F T H E C I R C L E !

4. I N S C R I B E D A N G L E S H A V E T H E I R V E R T E X O N
T H E C I R C L E .

5. T H I S I S O N E O F T H E A N G L E S W I T H T H E
V E R T E X O N T H E C I R C L E , B U T B O T H C H O R D S
A R E N O T I N T H E C I R C L E .

6. T H E S E A N G L E S H A V E T H E I R V E R T E X I N T H E
C I R C L E

7. T H E S E A N G L E S H A V E T H E I R V E R T E X
O U T S I D E T H E C I R C L E .

8. T H E S E A N G L E S H A V E T H E I R V E R T E X
O U T S I D E T H E C I R C L E .