# apothem

[ ap-uh-them ]

/ ˈæp əˌθɛm /

### noun Geometry.

a perpendicular from the center of a regular polygon to one of its sides.

## QUIZZES

#### THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST

In our third teacher-created PSAT practice test there are new and unique vocabulary terms you may have never heard of! Can you guess what they mean?

Question 1 of 10

seclusion

## Words nearby apothem

apothecaries' weight, apothecary, apothecary jar, apothecium, apothegm, apothem, apotheosis, apotheosize, apotropaic, apotropaism, app

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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

## Example sentences from the Web for apothem

In any pyramid, the apothem is to half the base as the area of the four sides is to the area of the base.

The Solution of the Pyramid Problem|Robert BallardA peculiarity of this pyramid is, that base is to altitude as apothem is to half base.

The Solution of the Pyramid Problem|Robert BallardI have mentioned the above to show how very nearly these ratios agree with my exact ratio of 21 to 34 half base to apothem.

The Solution of the Pyramid Problem|Robert BallardThe "Apothem is a perpendicular from the vertex of a pyramid on a side of the base."

The Solution of the Pyramid Problem|Robert Ballard

## British Dictionary definitions for apothem

apothem

/ (ˈæpəˌθɛm) /

### noun

the perpendicular line or distance from the centre of a regular polygon to any of its sides

## Word Origin for apothem

C20: from apo- + Greek thema, from tithenai to place

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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