Harriot, Thomas - Mss. 6784

291146

[Commentary:

The reference on this folio is to page 244 of Commandino's edition of Mathematicae collectiones (Pappus . Page 244 contains Proposition 132.
Theorema CXXI. Propos. CXXXII.
Rursum si sit descripta figura, &

D F

ipsi

A C

fit parallela, erit

A B

æqualis

B C

. Sit igitur æqualis. Dico

D F

ipsi

A C

parallelum esse.
Again let the figure be drawn, with

D F

parallel to

A C

, then

A B

is equal to

B C

. Let it be equal. I say that

D F

is parallel to

A C

. ]

Sit parallelogrammum

a b c d

ducantur.

a d

b l

c g

.
sese intersecantes in puncto

e

.
Et sit

f h k

parallela,

b a

Dico quod

k h = c l

[Translation: Let the parallogram

a b c d

be drawn, with

a d

b l

c g

intersecting one another at the point

e

.
And let

f h k

be parallel to

b a

I say that

k h = c l

S.W.L.
ad resectionem

[Translation: Sir william Lower, on the cutting off of an ]

Sit

Δ

a b c

a g

bisecans basim

b c

.
et

b e

c d

; sese intersecantes
in lineam

a g

[Translation: Let there be a triangle

a b c

, with

a g

bisecting the base

b c

, and

b e

and

c d

intersecting each other on the line

a g

Vide pappum 244.
in porismatis
ubi alia huismodi

[Translation: See Pappus, page 244, on porisms, where there are others of this kind, ]

281 (141)	282 (141v)
283 (142)	284 (142v)
285 (143)	286 (143v)
287 (144)	288 (144v)
289 (145)	290 (145v)

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