Let P and Q be the two points

1975

As the girls lie down at the Monolith Miss McCraw (Vivean Gray) looks up from her book at the picnic ground.

When she looks back to the book we see what appears to be a page of mathematical text.

“Let P and Q be the two points, and let PQ meet the road in B.”

Today

Vivean Gray was holding a copy of Plane Trigonometry, Part 1 by Sidney Luxton Loney. Here’s a copy of the same page from the 1895 edition available as a free ebook from Google Books:

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