h geometry 9.1 day 2 + 9.2.notebook - dozier math - home
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H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
BellworkDraw RHOMBUS PQRS. Label the vertices.Is there another way you could have labeled the vertices? Explain.
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
9.1 Factoring ax2 + bx + c 9.2 Introduction to Circles
Mastery Objective:You will be able to:• begin solving problems involving circles• factor trinomials of the form ax2 + bx + c
Language Objective:• Understand and apply terminology related to circles.
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
Example Solve for x.
Factoring ax2 + bx + c
ExampleSolve for z.
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
1 3
ExampleSolve for x.
Circumference
Area
or
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
An arc is made up of 2 points on a circle and all the points connecting them. Its length is a fraction of the circumference, its measure is a fraction of 360o.
A sector is a region bounded by 2 radii and an arc of the circle. Its area is a fraction of the area of the circle.
AB
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
A chord is a segment whose endpoints lie on the circle.
A diameter is a chord that intersects the center of the circle.
Example
A
B(5, 0)
Find:a) The coordinates of A
b) mAB
c) The length of AB
d) The area of the shaded region (sector BOA)
O
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
The measure of an inscribed angle is half the measure of its intercepted arc.
Examples
H Geometry 9.1 day 2 + 9.2.notebook February 09, 2015
Homework9.1/9.2 p369 #10 + p374 #18,1113