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protractors. angle to leftThe horizontal angle measured counter-clockwise from the preceding line to the following one. By signing up you are agreeing to receive emails according to our privacy policy. . Have a good day . angle, exteriorThe angle between any two adjacent sides on the exterior of a triangle or polygon. by modern instruments. angle, directAn angle measured directly between two lines, as distinguished in transit traverse from a deflection angle. Bearing of BA = 164 15 + 180 = 344 15. of surveyed area. Share: Here, back bearing is not given, so we have to calculate the back bearing with the help of fore bearings. The dihedral angle is measured in the plane which is perpendicular to each of the two intersecting planes and to the line of their intersection. Calculate the interior angles: Ans: 14.What do you mean by : (i) True bearing of a line (ii) Isogonic line (iii) Agonic line (iv) Magnetic bearing (v) Magnetic declination (vi) Magnetic dip True bearing of a line: It is the horizontal angle between the true meridian and a survey line. However, some surveyors have realized that calculating the direction of a line is much easier when using azimuths and then converting the azimuths to bearings for representation on documents. All about civil construction knowledge- PARAM VISIONS. This article has been viewed 374,302 times. Welcome to the exterior angles of a triangle calculator, a simple and convenient tool that will help you calculate a triangle's exterior Average satisfaction rating 4.8/5 Based on the average satisfaction rating of 4.8/5, it can be said that the customers are highly satisfied with the product. Regular and irregular polygons with the same number of sides will always have the same sum of interior angles, the difference only being that in a regular polygon, all interior angles have the same measurement. Drawing Triangles 1 Draw the polygon whose angles you need to sum. The word brass is used as a measurement un Now, let us go through 7 basic rules while lapping the rebars in columns. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. each interior angle = nsum of interior angles = n180 (n 2) If your shape is irregular and you have the values of all the other interior angles, you can find the missing angle by subtracting your given angles from the sum: unknown angle = sum of interior angles sum of given interior angles = 180 (n 2) sum of given interior angles LESSON