diff --git a/collects/teachpack/2htdp/scribblings/image-toc.rkt b/collects/teachpack/2htdp/scribblings/image-toc.rkt
index 3eda371690..8828a85896 100644
--- a/collects/teachpack/2htdp/scribblings/image-toc.rkt
+++ b/collects/teachpack/2htdp/scribblings/image-toc.rkt
@@ -592,10 +592,10 @@
     "13d2f555f6a.png")
    (list '(triangle/ass 10 60 100 "solid" "seagreen") 'image "11de2af7edc.png")
    (list
-    '(triangle/sss 60 80 100 "solid" "lightseagreen")
+    '(triangle/sss 80 80 40 "solid" "lightseagreen")
     'image
-    "17bcc9ddde9.png")
-   (list '(triangle/sss 80 60 20 "solid" "aquamarine") 'image "20e0d5dcf9.png")
+    "1828ba0c75d.png")
+   (list '(triangle/sss 80 40 60 "solid" "aquamarine") 'image "1fe0d5def9.png")
    (list '(triangle/sss 40 60 80 "solid" "seagreen") 'image "ed23c3c3ed.png")
    (list
     '(isosceles-triangle 60 330 "solid" "lightseagreen")
diff --git a/collects/teachpack/2htdp/scribblings/image.scrbl b/collects/teachpack/2htdp/scribblings/image.scrbl
index f6c8fc5bbd..ea1725a658 100644
--- a/collects/teachpack/2htdp/scribblings/image.scrbl
+++ b/collects/teachpack/2htdp/scribblings/image.scrbl
@@ -280,8 +280,8 @@ They all construct a triangle oriented as follows:
  @mode/color-text
  
  @image-examples[(triangle/sss 40 60 80 "solid" "seagreen")
-                 (triangle/sss 80 60 20 "solid" "aquamarine")
-                 (triangle/sss 60 80 100 "solid" "lightseagreen")]
+                 (triangle/sss 80 40 60 "solid" "aquamarine")
+                 (triangle/sss 80 80 40 "solid" "lightseagreen")]
 }
 
 @defproc*[([(triangle/ass [angle-a angle?] 
diff --git a/collects/teachpack/2htdp/scribblings/img/17bcc9ddde9.png b/collects/teachpack/2htdp/scribblings/img/17bcc9ddde9.png
deleted file mode 100644
index e86e06ffc6..0000000000
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diff --git a/collects/teachpack/2htdp/scribblings/img/1828ba0c75d.png b/collects/teachpack/2htdp/scribblings/img/1828ba0c75d.png
new file mode 100644
index 0000000000..fab65a7734
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diff --git a/collects/teachpack/2htdp/scribblings/img/1fe0d5def9.png b/collects/teachpack/2htdp/scribblings/img/1fe0d5def9.png
new file mode 100644
index 0000000000..c538b7737e
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diff --git a/collects/teachpack/2htdp/scribblings/img/20e0d5dcf9.png b/collects/teachpack/2htdp/scribblings/img/20e0d5dcf9.png
deleted file mode 100644
index b838b66a51..0000000000
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