# Where is the Angle Measure Tool in ArcMap 10?

I can't seem to find it.

-
forums.arcgis.com/threads/… – whuber Oct 22 '10 at 17:05

You mean this? Select, and then tap in angle, as per what u did in 931? Can still do direction/length in combo as well. Let me know if this is not what ur after

-

Without even being sarcastic, for most tasks I use a simple set square / triangle and measure directly on the screen. Quick and dirty solution that works just fine.

-

In ArcGIS 10.1 and later, there is a tool called COGO - located in the Editor Toolbar/More Editing Tools/COGO. On the tool bar there is a button called Reporting COGO descriptions. This reporting tool has a feature called "Angle between two lines" which reports the angle between 3 points on a line.

-
Thanks a million. You saved the day... – jonatr Aug 6 '15 at 11:53

This Python script tool will do the trick. To use it, add it as a script tool, set the parameter to Feature Set - and set its schema to a line feature class. This script should work with 10.0 and later.

``````# calculate an azimuth angle from a interactively entered
# line (feature set)
#
# Curtis Price, cprice@usgs.gov,  9/18/2013 11:51:10 AM

import math
import arcpy

# read line (This parameter should be a line feature set)
line = arcpy.GetParameterAsText(0)

# to see how this is used, see the help:
# http://resources.arcgis.com/en/help/main/10.1/index.html#//001500000028000000
# http://resources.arcgis.com/en/help/main/10.1/index.html#//002w00000023000000

def get_angle(xy1, xy2):
"""Calculate azimuth angle from two points. (Zero is north.)"""
import math
try:
# ArcPy point objects
x1, y1, x2, y2 = xy1.X, xy1.Y, xy2.X, xy2.Y
except:
# xy strings, e.g. "0 0"
x1, y1 = [float(x) for x in xy1.split()]
x2, y2 = [float(x) for x in xy2.split()]
dx, dy = (x2 - x1, y2 - y1)
return 90 - math.degrees(math.atan2(dy, dx))

try:
# get first and last point of a line
SHAPE = arcpy.Describe(line).shapeFieldName
Rows = arcpy.SearchCursor(line,"","",SHAPE)
feat = Rows.next().getValue(SHAPE)
pt1 = feat.firstPoint
pt2 = feat.lastPoint
angle = get_angle(pt1, pt2)
msg1 = "  First point: {0:.1f}, {0:.1f}".format(pt1.X, pt1.Y)
msg2 = "  Last point:  {0:.1f}, {0:.1f}".format(pt2.X, pt2.Y)
msg3 = "  Azimuth angle (in degrees): {0:.1f}".format(angle)