diff --git a/Karto/README-why.md b/Karto/README-why.md
new file mode 100644
index 0000000..75b0b82
--- /dev/null
+++ b/Karto/README-why.md
@@ -0,0 +1,3 @@
+- cannot measure an angle between xline and polyline. "xline is not a line".
+- inserting a block takes up 2 layers: the one that the block was created in, and
+  where it was inserted.
diff --git a/Karto/assignment5/KTZ004_2019_05_brez.dwg b/Karto/assignment5/KTZ004_2019_05_brez.dwg
index cd1feb1..97c4dbe 100644
Binary files a/Karto/assignment5/KTZ004_2019_05_brez.dwg and b/Karto/assignment5/KTZ004_2019_05_brez.dwg differ
diff --git a/Karto/assignment5/measure.py b/Karto/assignment5/measure.py
index e419dc8..c7615bc 100755
--- a/Karto/assignment5/measure.py
+++ b/Karto/assignment5/measure.py
@@ -3,6 +3,8 @@ from math import sqrt
 import numpy as np
 from scipy.spatial.distance import euclidean
 
+# ilgiausios B sklypo krastines kampas: -4.7727°
+
 A = -7.756
 B = 4.686
 C = -7.663
@@ -53,3 +55,4 @@ objs = {
 }
 for id, obj in objs.items():
     print("%d: (%.3f,%.3f)" % (id, obj[0], obj[1]))
+
diff --git a/Karto/assignment5/obelis.dwg b/Karto/assignment5/obelis.dwg
new file mode 100644
index 0000000..8cb6fd3
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