reciprocal

Governing bodies usually have reciprocal arrangements for the home board to pick up the logistical expenses of the visiting team, including things like travel and accommodation.

From BBC ● Oct. 5, 2026

A senior US State Department official told reporters: "We've taken reciprocal action with respect to a Brazilian diplomat here to make the point that it can't always be one-sided"

From Barron's ● Sep. 30, 2026

The U.S. and China said they agreed to a $30 billion reciprocal tariff reduction and to launch a bilateral dialogue on AI, the Journal’s Katrina Northrop reports.

From The Wall Street Journal ● Sep. 28, 2026

It was a rare reciprocal relationship in an interaction otherwise distorted by fame—we loved her because she was Gloria Steinem, and she loved us because we were bright-eyed young women.

From Slate ● Sep. 3, 2026

Most interesting of all, if you take a number x and replace it with its reciprocal 1/x, that is equivalent to flipping the sphere upside down and reflecting it in a mirror.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

Since they are not negative reciprocals, the lines are not perpendicular.

From Textbooks ● Apr. 22, 2020

The slopes are negative reciprocals of each other, so the lines are perpendicular.

From Textbooks ● Apr. 22, 2020

We can use the fact that perpendicular lines have slopes that are negative reciprocals.

From Textbooks ● Apr. 22, 2020

We can graph by observing the graph of the tangent function because these two functions are reciprocals of one another.

From Textbooks ● Feb. 13, 2015

But of these twenty-four cross-ratios groups of four are equal, so that there are really only six different ones, and these six are reciprocals in pairs.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various