name the term that best describes the notation
DESCRIPTION
Name the term that best describes the notation. Secant. Radius. Diameter. Chord. Tangent. _______ __ _ _____. TANGENT = a LINE that intersects the circle exactly ONE time. Common Tangents. http://www.ies.co.jp/math/java/geo/comtan/comtan.html. YOUR TURN. 3 common tangents. - PowerPoint PPT PresentationTRANSCRIPT
Name the term that best describes the notation.
Secant
Radius
DiameterChord
Tangent
TANGENT = a LINE that
intersects the circle exactly
ONE time
Common Tangents
http://www.ies.co.jp/math/java/geo/comtan/comtan.html
YOUR TURN
3 common tangents 0 common tangents 1 common tangent
If a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of tangency
Point of Tangency
More Pythagorean Theorem type problems! Yeah!!
leg2 + leg2 = hyp2
x = 15
92 + 122 = x2
leg2 + leg2 = hyp2
RQ = 16
122 + x2 = (8+12)2
122 + x2 = 202
leg2 + leg2 = hyp2
r2 + 482 = (r+36)2
r2 + 2304 = r2 +72r+1296
r=14
RS
T
TSRS
If two segments from the same
exterior point are tangent to a circle,
then they are congruent.
Party hat problems!
R
S
T
22 x
11 1122 x92 x
3x
A
C
B
132 x
47
30x
2 13 47x
A
C
B
15
2x
9
28x
15 9
2x