GRE Quantitative Flashcards: Polygons Circles

Study Polygons Circles in GRE Quantitative with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Find the number of diagonals in a nonagon.

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ANSWER

$27$ . For $n=9$ , diagonals are $rac{9(6)}{2}=27$ in a nonagon.

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You are herePolygons and Circles24 cards

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What this deck covers

This deck focuses on Polygons Circles, giving you a quick way to review the definitions, rules, and examples that matter most for GRE Quantitative.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 18Practice questions for this set

A circle has radius

9

. A sector of the circle has area

\frac{27\pi}{2}

. What is the measure of the central angle of the sector, in degrees?

Choose an answer

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