From 95012cc4632c83522588ad32137a53d5280b606e Mon Sep 17 00:00:00 2001
From: pubpub-zz <4083478+pubpub-zz@users.noreply.github.com>
Date: Sat, 10 Sep 2022 21:08:20 +0200
Subject: [PATCH] BUG: Fix Error in transformations (#1341)

Error detected during analysis of #1280
---
 PyPDF2/_page.py    | 4 ++--
 tests/test_page.py | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/PyPDF2/_page.py b/PyPDF2/_page.py
index 682db1151..cb38a1a0e 100644
--- a/PyPDF2/_page.py
+++ b/PyPDF2/_page.py
@@ -217,8 +217,8 @@ def compress(matrix: TransformationMatrixType) -> CompressedTransformationMatrix
             matrix[0][1],
             matrix[1][0],
             matrix[1][1],
-            matrix[0][2],
-            matrix[1][2],
+            matrix[2][0],
+            matrix[2][1],
         )
 
     def translate(self, tx: float = 0, ty: float = 0) -> "Transformation":
diff --git a/tests/test_page.py b/tests/test_page.py
index 8abaa6f1a..77990ba63 100644
--- a/tests/test_page.py
+++ b/tests/test_page.py
@@ -88,6 +88,10 @@ def test_page_operations(pdf_path, password):
 
     page: PageObject = reader.pages[0]
 
+    t = Transformation().translate(50, 100).rotate(90)
+    assert abs(t.ctm[4] + 100) < 0.01
+    assert abs(t.ctm[5] - 50) < 0.01
+
     transformation = Transformation().rotate(90).scale(1).translate(1, 1)
     page.add_transformation(transformation, expand=True)
     page.add_transformation((1, 0, 0, 0, 0, 0))