PROPERTIES OF INTERSECTING CHORDS INSIDE A CIRCLE

If two chords intersect inside a circle, then the product of the lengths of the segments of one chord is equal to the product of the lengths of the segments of the other chord.

EA ∙ EB = EC ∙ ED

Problem 1 :

Find the value of x.

Solution :

Notice that ST and QP are chords that intersect at R.

RS RT = RQ ∙ RP

3 6 = 9 ∙ x

18 = 9x

x = 2

Find the value of x.

Problem 1:

Solution :

PK ∙ PM = PL ∙ PN

x ∙ 12 = 6 ∙ 12

12x = 72

x = 6

Problem 2 :

Solution :

BA ∙ BC = BD ∙ BE

6 ∙ 6 = x ∙ 9

36 = 9x

x = 4

Problem 3 :

Solution :

VR ∙ VT = VS ∙ VU

6 ∙ 4 = x ∙ 8

24 = 8x

x = 3

Problem 4 :

Solution :

HE ∙ HG = HF ∙ HJ

4 ∙ 10 = x ∙ 8

40 = 8x

x = 5

Problem 5 :

Solution :

GC ∙ GE = GD ∙ GF

5 ∙ 5 = 5 ∙ X

25 = 5x

x = 5

Problem 6:

Solution :

NJ ∙ NL = NK ∙ NM

x ∙ 12 = 16 ∙ 24

12x = 384

x = 32

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