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色恋沙汰は全て作図で
解決可能であることの証明
僕は数学を愛している
ただ一つの答えを求めている
しかしもっと愛しているのは
幼なじみの女子
今日も必死のアピール
素敵なひし形のイヤリングだ
4辺の長さは同じ
向かい合えば平行
あっちもこっちも平行
対角線はそれぞれの中点で垂直に交わり
しかも角を二等分
なんて美しい図形!
なんて美しい図形!
「そうなんだ……」
なぜドン引きする?
ねじれの位置にいるみたいな顔をするな
戸惑う僕を鼻で笑う女子に人気の顔面黄金比(イケメン)
もしや貴様もこの子を狙っているのか?
作図だ!
二人を結ぶ線の真ん中に
絶対に越えられない壁を築く
(1)あの子を中心にコンパスで円を
(2)あいつを中心に同じ大きさで
(3)2つの交点を結べば
垂直二等分線の完成だ
見たか、数学の力を
君が筋肉の力で壊したけど
今日はあの子が生まれた日
ホールケーキを贈るサプライズ
自分で8割食べちゃった点を抜けば
完璧なプレゼント
完璧なプレゼント
「半分こしよ」
そっけなく君は言う
僕は8割食べたからもういいっての
「バカ」何だと?
僕の数学力をペガサスとすると
君はさしずめ粘液を放つ上かわいい虫
作図だ!
二等分などロポニッチョにおける
パーラマハモルゲルほど容易いのだ
(1)とんがりを中心に円を
(2)2つの交点から同じ大きさで
(3)その交点ととんがりを結べば
角の二等分線の完成だ
ケーキはもうぐちゃぐちゃだから
君は浮かない顔をしているけど
……やっちまった!
数学のせいで嫌われる一方
昔は良かった 手を繋いで写真も撮った
赤い糸なんて曖昧なものではなく
確かな線分で結ばれていると思っていた
作図だ!
思い出の写真真っ二つにして
この恋をきっぱり0にしてしまおう
(1)線分上の手を中心に円を
(2)2つの交点から同じ大きさで
(3)その交点と手を結べば
垂線でお別れだ
捨てた写真 それを目にしたあの子は
泣き出しそうな顔で走り去った
君を見失ってしまったが
大通りで見たという証言
ここからの最短ルートは
垂線だ
作図だ!
僕が数学に目醒めたのは
君への最短距離を見つけるためだったんだ
(1)ここ中心にあの道にかかる円を
(2)2つの交点から同じ大きさで
(3)その交点をめがけて走る
木々をかき分けて
枝が刺さる 痛みはない
疲れもない あるのは
数字化不可能な情熱だけ
君を見つけた
好きだと言った
君は笑った
答えは一つ
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Irokoizata wa Subete Sakuzu de
Kaiketsu Kanou de Aru Koto no Shoumei
Boku wa suugaku o aishiteiru
Tada hitotsu no kotae o motometeiru
Shikashi motto aishiteiru no wa
Osananajimi no joshi
Kyou mo hisshi no apiiru
Suteki na hishigata no iyaringu da
Shi-hen no nagasa wa onnaji
Mukaiaeba heikou
Acchi mo kocchi mo heikou
Taikakusen wa sorezore no chuuten de suichaku ni majiwari
Shikamo kaku o nitoubun
Nante utsukushii zukei!
Nante utsukushii zukei!
"Sou nanda..."
Naze donhiki suru?
Nejire no ichi ni iru mitai na kao o suru na
Tamadou boku o hana de warau joshi ni ninki no ikemen
Moshiya kisama mo kono ko o neratteiru no ka?
Sakuzu da!
Futari o musubu sen no mannaka ni
Zettai ni koerarenai kabe o kizuku
(1) Ano ko o chuushin ni konpasu de en o
(2) Aitsu o chuushin ni onnaji ookisa de
(3) Futatsu no kouten o musubeba
Suichoku nitoubunsen no kansei da
Mita ka, suugaku no chikara o
Kimi ga kinniku no chikara de kowashita kedo
Kyou wa ano ko ga umareta hi
Hooru keeki o okuru sapuraizu
Jibun de hachi-wari tabechatta ten o nukeba
Kanpeki na purezento
Kanpeki na purezento
"Hanbunko shiyo"
Sokkenaku kimi wa iu
Boku wa hachi-wari tabeta kara mou ii tte no
"Baka" Nan dato?
Boku no suugakuryoku o Pegasasu to suru to
Kimi wa sashizume neneki o hanatsu ue kawaii mushi
Sakuzu da!
Nitoubun nado roponiccho ni okeru
Paaramahamorugeru hodo tayasui no da
(1) Tongari o chuushin ni en o
(2) Futatsu no kouten kara onnaji ookisa de
(3) Sono kouten to tongari o musubeba
Kaku no nitoubunsen no kansei da
Keeki wa mou guchagucha dakara
Kimi wa ukanai kao o shiteiru kedo
...Yacchimatta!
Suugaku no sei de kiwareru ippou
Mukashi wa yokatta te o tsunaide shashin mo totta
Akai ito nante aimai na mono dewa naku
Tashika na senbun de musubareteiru to omotteita
Sakuzu da!
Omoide no shashin mapputatsu ni shite
Kono koi o kippari zero ni shite shimaou
(1) Senbun-jou no te o chuushin ni en o
(2) Futatsu no kouten kara onnaji ookisa de
(3) Sono kouten to te o musubeba
Suisen de o-wakare da
Suteta shashin sore o me ni shita ano ko wa
Nakidashisou na kao de hashirisatta
Kimi o miushinatte shimatta ga
Oodoori de mita toiu shougen
Koko kara no saitan ruuto wa
Suisen da
Sakuzu da!
Boku ga suugaku ni mezameta no wa
Kimi e no saitan kyori o mitsukeru tame dattanda
(1) Koko chuushin ni ano michi ni kakaru en o
(2) Futatsu no kouten kara onnaji ookisa de
(3) Sono kouten o megakete hashiru
Kigi o kakiwakete
Eda ga sasaru itami wa nai
Tsukare mo nai aru no wa
Suujika fukanou na jounetsu dake
Kimi o mitsuketa
Suki da to itta
Kimi wa waratta
Kotae wa hitotsu
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Proof Geometric Construction
Can Solve All Love Affairs
I love mathematics;
I'm always seeking that one and only answer
But what I love more than that
Is a girl, a childhood friend
Once again today, desperately, I make a move...
What a wonderful diamond-shaped earring!
All four sides are the same length,
And the opposite sides are parallel...
Here, there, parallel everywhere
The diagonals cross each other's midpoints perpendicularly,
And they even bisect the angles!
Such a beautiful figure!
Such a beautiful figure!
"Oh, really..."
Why do you recoil so?
Don't give me that look like you're at a skewed position!
As I puzzle, the ladies man with the perfect golden-ratio face snorts;
Don't tell me, are you after her too?
Geometry time!
In the middle of the line connecting these two,
I'll construct a wall that can never be crossed
(1) Use a compass to draw a circle centered on her
(2) Do the same for him, with the same size
(3) Connect the two points of intersection,
And you have a perpendicular bisecting line!
Do you see now the power of math?
Though you destroyed it with the power of muscle...
Today is the day she was born,
So I surprised her with a gift, a full-size cake
Ignoring the fact that I ate 80% of it myself,
It's the perfect present!
It's the perfect present!
"Let's each have half..."
You said, curtly
But I already ate 80%, so I'm fine
"You dummy!" What's this?
If my math skills were a pegasus,
Yours would surely be a mucus-spewing yet cute bug!
Geometry time!
Bisection? Why, roponiccho such as that
Is as simple as paramahamolger!
(1) Draw a circle centered on the pointed end
(2) Do the same at the two intersections, the same size
(3) Connect that intersection with the pointed end,
And you have an angle-bisecting line!
Although the cake is a mess now,
So it seems you're not very happy...
...Now I've done it!
Because of my math, now she hates me...
Things used to be better; we even took a photo holding hands
Nothing so ambiguous as a red thread of fate,
I thought we were connected by a definite line segment...
Geometry time!
I'll cut this photo of my memories into two,
And reduce this love cleanly down to zero
(1) Draw a circle centered on the hands along the line
(2) Do the same at the two intersections, the same size
(3) Connect that intersection with the hands,
And you have a perpendicular-line farewell...
But when she saw me discarding that photo,
She looked ready to cry, and took off running...
Though I lost sight of you,
I heard you were seen on the main street
The shortest route there from here
Is a perpendicular line...
Geometry time!
The reason I got into mathematics
Was so I could find the shortest distance to you...
(1) Draw a circle centered here across that road
(2) Do the same at the two intersections, the same size
(3) Run toward that intersecting point,
And cut through the trees...
The branches scrape me, and I feel no pain,
I feel no exhaustion, but what I do feel
Is a passion that can't be put in numbers...
I found you,
I told you I love you,
You smiled;
My one and only answer...