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<Text-field style="Heading 1" layout="Normal">espiral,</Text-field>
<Text-field style="Text" layout="Normal"><Font italic="true">n. </Font><Font bold="true">1. </Font><Font encoding="UTF-8">qualquer curva plana formada por um ponto se enrolando ao redor de um ponto fixo a uma dist\303\242ncia crescente, tal como as curvas na figura abaixo. A equa\303\247\303\243o polar de uma  </Font><Font italic="true">espiral de Archimedes</Font><Font encoding="UTF-8"> \303\251 </Font><Font italic="true">r = a</Font><Font family="MaplePi">q</Font>; de uma <Font encoding="UTF-8" italic="true">espiral logar\303\255tmica</Font><Font encoding="UTF-8"> \303\251 log</Font><Font italic="true">r</Font> = <Font italic="true">a</Font><Font family="MaplePi">q</Font>; e de uma <Font encoding="UTF-8" italic="true">espiral hiperb\303\263lica</Font> is <Font italic="true">r</Font><Font family="MaplePi">q</Font> = <Font italic="true">a</Font>, onde <Font italic="true">a</Font><Font encoding="UTF-8"> \303\251 uma constante. </Font></Text-field>
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<Text-field style="Text" layout="Normal" alignment="centred"><Font bold="true" encoding="UTF-8">espirais de Archimedes e logar\303\255tmica.</Font></Text-field>
<Text-field style="Text" layout="Normal"> <Font bold="true">2.</Font> uma <Hyperlink linktarget="Dictionary:Definition/helix" hyperlink="true"><Font style="Dictionary Hyperlink" family="Times New Roman" encoding="UTF-8">h\303\251lice</Font></Hyperlink><Font encoding="UTF-8"> no espa\303\247o Euclideano.</Font></Text-field>
</Worksheet>