diff --git a/Envelope_2/doc_tex/Envelope_2/envelope.tex b/Envelope_2/doc_tex/Envelope_2/envelope.tex
index 15fdf90b039..1692b4c886a 100644
--- a/Envelope_2/doc_tex/Envelope_2/envelope.tex
+++ b/Envelope_2/doc_tex/Envelope_2/envelope.tex
@@ -110,7 +110,7 @@ diagram these functions output.
   <img src="./fig/min_diag.gif" border=0 alt="The minimization diagram">
   </center>
 \end{ccHtmlOnly}
-\caption{The lower envelope of eight line segments, labelled
+\caption{The lower envelope of eight line segments, labeled
 $A, \ldots, H$\,, as constructed in \ccc{ex_envelope_segments.cpp}.
 The minimization diagram is shown at the bottom, where
 each diagram vertex points to the point associated with it, and the
@@ -198,7 +198,7 @@ points along the {\em lower} part of the convex hull; see,
 e.g.,~\cite[Section~11.4]{bkos-cgaa-00} for more details.
 Note that the leftmost edge of the minimization diagram is associated
 with the same line as the rightmost edge of the maximization diagram,
-and vice-versa. We can therefore skip the rightmost edges of both
+and vice-verse. We can therefore skip the rightmost edges of both
 diagrams:
 
 \ccIncludeExampleCode{Envelope_2/ex_convex_hull.cpp}