1. Justine bought a new television priced at $449
Justine bought a new television priced at $449. If the television was on sale for 15% off, about how much did Justine pay?
$75 b) $325 c) $375 d) $525
8. Estimate between which two integers falls.
7 and 8 b) 8 and 9 c) 9 and 10 d) 37 and 38
The ratio of Elm trees to Oak trees in the park is 4:5. If there are 135 trees in the park, how many are Oak?
15 b) 27 c) 60 d) 75
Miquel just deposited $878 in his savings account. He will earn 3% interest per year on his money. If he leaves the money in the bank for 4 years, approximately how much money will he have then?
a) $25 b) $150 c) $900 d) $1,000

2. Circles and Spheres
Unit 9 Lesson 9.1 Notes

3. Try to match each given term with its definition.
1) circle
____ circles or spheres that have the same center point
2) center
____ a segment whose endpoints lie on a circle
3) radius
____ the set of all points in space the same distance
from one center point
4) chord
____ the distance from the center of a circle to the
circle itself
5) secant
____ the one point that is the same distance from every
point on the circle
6) diameter
____ the segment whose endpoints lie on the circle and
also goes through the center of the circle
7) tangent
____ the set of points in a plane that are all equal
distance from a center point
8) point of
tangency
____ a line that contains a chord
9) sphere
____ circles or spheres with the same radius
10) congruent
circles or
spheres
____ a polygon that is inside a circle with all its vertices
on the circle (the circle is circumscribed around
the polygon)
11) concentric
____ a line that intersects the circle in exactly one
point
12) inscribed
polygons
____ the point where a tangent line meets the circle

4. Use the following circle to draw in an example of each term listed below:
Center Radius Chord Secant
Diameter Tangent Point of tangency
Draw a diagram to show an example of each of the terms below:
Concentric circles Inscribed polygon

5. Try the following as practice:K L N
Name three radii
2) Name a diameter
3) Name two chords
4) Name a secant
5) Why is TK not a chord?
6) Name a tangent
7) What name do we give to L?
where 0 is the center

6. Additional Practice L P N M O Q R
Homework : Practice Worksheet 9.1