## Area TEST

Area TEST Tomorrow!!

Area Formulas to Know:
parallelogram
triangle
trapezoid
rhombus
regular polygon
circle

Test Specs:
100% Application

Answers to the Review Sheet are posted on the homework page of my website.
http://www.shelbyed.k12.al.us/schools/omhs/faculty/sculbreth/hmwrk.htm

HINT:
Use trig to find the apothem of pentagon, decagon or octagon (any figure w/o 30-60-90 or 45-45-90 triangles.)

Use 30-60-90 or 45-45-90 formulas for equilateral triangle, square and hexagon.

SHOW ALL WORK!! for possible partial credit!

I’ll check in at 7:30 and 10:00 for questions.

Study!
Mrs. C

## Circle III TEST

Circle III TEST Tomorrow!!

Test Topics:
Arc Length
Area of a Sector
Geometric Probability
Circle Graphs
Equation of a Circle

Test Specs:
Formulas     6 pts
Circle Graph     20 pts
Probability     12 pts
Arc Length     12 pts
Area of Sector     12 pts
Equation of Circle     18 pts
(80 point test)

Answers to the Review Sheet are posted on the homework page of my website.
http://www.shelbyed.k12.al.us/schools/omhs/faculty/sculbreth/hmwrk.htm

HINT:  You need to know what each varible in the formulas represent (including x & y).  “In terms of Π” means that Π will be in the answer.  Don’t forget probability with a circle inside a square……see your examples.

I’ll check in at 7:30 and 10:00 for questions.

Study!
Mrs. C

## Circles II: Arcs & Segments TEST

Circles II:  Arcs & Segments TEST Tomorrow!

Chapter 10 – Sections 3, 5, 7

Test Specs:
100% application of Segment/Arc Theorems

Answers to the Practice Workbook Review are posted on the homework page of my website.
http://www.shelbyed.k12.al.us/schools/omhs/faculty/sculbreth/hmwrk.htm

HINT:  Questions with the description of a circle are much easier if you DRAW the circle with its segments.

I’ll check in at 7:30 and 10:00 for questions.

Study!
Mrs. C

## Arcs & Chords by Caitlin P

RELATIONSHIP                                             THEORM

1. 2a=b                                                       1. **The radius is
a=1/2b                                                       1/2 the diameter.

2. YZ is congruent to WX                       2. **Congruent chords
arc YZ is congruent to arc WX               form congruent arcs. 3. TU is perpendicular to RS                 3. **If a diameter is
e is congruent to f                                   perpendicular to a
arc SU is congruent to arc UR              chord, then it bisects
the chord and its arc. 4. NO is congruent to QP                       4. **Congruent chords are
g is congruent to h                                    equidistance from the
center of the circle. ## Circles I: Arcs & Angles TEST

Circles I:  Arcs & Angles TEST Tomorrow!

Chapter 10 – Sections 1, 2, 4, 6

Test Specs:
Definitions     (16 pts)
Calculate Circumference  (6 pts)
Determine missing angles and arcs   (78 pts)

HINT:  Don’t forget that all radii of circles are congruent.  A central angle will always form an isosceles triangle.

I’ll check in at 7:30 (maybe a few minutes later) and 10:00 for questions.

Study!
Mrs. C

## Circles By: Emily R.

Circle- The locus of all points in a plane equidistance from a given point.

Center– Given point/how you name the circle.

Circumference- distance around the circle.

Chord- segment w/ endpoints on the circle.

Diameter- Chord through the center.

Radius- segment w/ endpoints on the circle and center. equals 1/2 of the diameter.

Pi= Circumference/ diameter

Circumference= Pi(diameter)

## Arcs and Angles 2 by Jacob K.

**Interior angle formed by 2 chords=1/2 the sum of the intercepted angle

**Exterior angle formed by 2 secants=1/2 the difference of the intercepted arcs

**Exterior angle formed by a secant and a tangent=1/2 the difference of the intercepted angle

**Angle formed by a tangent and secant to the point of tangency=1/2 the intercepted arc

**Exterior angle formed by 2 tangents=1/2 the difference of the intercepted arcs