Log in. Join now. they are called the arms or sides or legs of an angle, the answer is certainly not vertex.The vertex is the meeting point of two rays that form an angle. Found 2 solutions by MathLover1, Alan3354: Answer by MathLover1(17568) (Show Source): You can put this solution on YOUR website! So for example, 60° and 120° are supplementary angles. Add that to the 90° we already marked off, and we have about a 120° angle. An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. The values of these functions like the value of Cos 120 or Cos 0 is important in these fields. An angle which is 360 degrees is often called a revolution. An angle it looks like this. Question 387637: If each interior angle of a regular polygon measures 120 degrees then what would be the equation to find the number of sides,n in this polygon? 360 degrees. 1 decade ago. When we study the relationship between angles and sides of a triangle, it is called Trigonometry. There are Angles with more than a 90 degree bend called Vee's. Free PDF Download of CBSE Maths Multiple Choice Questions for Class8 with Answers Chapter 4 Practical Geometry. Lv 7. 120 Degree Angle. 2. On other pages there are instructions for constructing angles of 30°, 45°, 60° and 90°. An acute angle is an angle measuring between 0 and 90 degrees and an obtuse angle is an angle between 90 to 180 degrees so a 120 degree angle is an obtuse angle. Right Angle Triangle- If one of the angles of a triangle is more than 90 degree, it is called Right Angle Triangle. Formula of Obtuse Angle Triangle . This is how large 1 Degree is . These smaller units, however, can only be measured with high-precision instruments. Specifically, they encode information about an axis-angle rotation about an arbitrary axis. Adjust the angle above and try to create the full angle going around in both directions. Trigonometry is used in almost all fields. I just want to know the mathematical relationships between AOV and FOV what I said above. The cosines of these angles are known as the direction cosines. A camera's angle of view depends not only on the lens, but also on the sensor. So that's one side of the angle or one of the rays and then I'll put the other one on the baseline right over here. bheemshankarshankar2 bheemshankarshankar2 08.09.2020 Math Primary School +5 pts. The two rays that form an angle are called the vertex of the angle. Source(s): hope this helps. 4 years ago. The on an sided polygon add up to degrees. 180 degrees - 90 degrees = 90 degrees. These angles are called reflex angles. So let's call that maybe a 128-degree angle. what is a 120 degree angle called? Wiki User Answered . It is always the side opposite the right angle. 9 years ago. 0 3. The exterior angle and the angle it is adjacent to form a straight line, so they add to 180 degrees. 30 + 60 = 90. 1. Favourite answer. Terminal and Initial Sides of Angles. The following three basic rotation matrices rotate vectors by an angle θ about the x-, y-, or z-axis, in three dimensions, using the right-hand rule—which codifies their alternating signs. hope this helps! Explanation: The angle between the isometric axes is 120 degrees if any line is parallel to it then those are called isometric lines. MCQs from CBSE Class 9 Maths Chapter 6: Lines and Angles 1. Area of an obtuse angle triangle = ½ * b * h , where b is the base and h is the height of the triangle. A basic rotation (also called elemental rotation) is a rotation about one of the axes of a coordinate system. You also didn't write what the angle is called, "let say..." $\endgroup$ – DonAntonio Oct 30 '13 at 17:23 $\begingroup$

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