February 16, 2016
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February 16, 2016
February 16, 2016
(10.1) Circles and Circumference
Objective: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
Why: Circles are used in many applications, discs, rides, wheels.
We will need to apply this knowledge to arcs and angle measures.
February 16, 2016
Vocabulary:
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
circle:
center:
radius:
chord:
diameter:
concentric circles:
pi ( π ):
inscribed:
circumscribed:
February 16, 2016
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
February 16, 2016
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
An asteroid hit Earth and created a huge round crater. Scientists
measured the distance around the crater as 78.5 miles. What was
the diameter of the crater?
February 16, 2016
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
Find the exact circumference of
K.
To prove all circles are similar.
February 16, 2016
https://learnzillion.com/lesson_plans/7259-show-that-all-circles-are-similar-using-similartriangles
Obj: To identify and use parts of circles.
Prove all circles are similar.
To solve problems involving the circumference.
To prove all circles are similar.
D
C
C
This means that given any 2 circles, there is a sequence of
transformations on the plane (reflections, rotations, translations,
dilations) transforming one to the other.
February 16, 2016
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
In the figure, P is inscribed in equilateral
the exact circumference of
P?
LMN. What is
February 16, 2016
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
In the figure, P is inscribed in equilateral
the exact circumference of
P?
LMN. What is
February 16, 2016
HW:
Obj: To identify and use parts of circles.
To solve problems involving the circumference.
To prove all circles are similar.
(HR): (10.1): Pg.701: 18-21, 28, 29, 33, 50, 51, 53