An angle that is 120 degrees is called what - 16082522 1. As a reflex angle turns one full rotation of 360 degrees, a circle is formed. The cosines of these angles are known as the direction cosines. But we generally mean the reflex angle and so it is a full circle or 360°. 10 Answers. These angles are called reflex angles. 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. One could argue that this is the same as a zero-sized angle. (Note: "Degrees" can also mean Temperature, but here we are talking about Angles) The Degree Symbol: ° We use a little circle ° following the number to mean degrees. 1. There are angles with less than a 90 degree bend leaving the legs more open than 90 degrees. 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. 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. A 120 degree angle is called what? This is the Full Angle. Remote sensing. When the sum of the measures of two angles is 90°, the angles are called (а) supplementary angles (b) complementary angles (c) adjacent angles (d) vertically opposite angles Answer/Explanation One Degree. The corners of a square are all right angles; a 180° angle is made by prolonging a line. Join now. Right Angle Triangle- If one of the angles of a triangle is more than 90 degree, it is called Right Angle Triangle. It is showed as an angle,for example,which will be printed on the specification of VR/AR product,such as 210° showed by Sony.Meanwhile，there is another key parameter which is called AOV ( angle of view）of LCD or OLED screen. The two rays that form an angle are called the "legs" or "sides" of the angle. MCQs from CBSE Class 9 Maths Chapter 6: Lines and Angles 1. Once an angle is larger than 180 degrees, it is categorized as a reflex angle. This is shown in Constructing the sum of angles. An obtuse angle. Specifically, they encode information about an axis-angle rotation about an arbitrary axis. Around weird atoms that happen to be reasonably happy having 6 electrons in their outer shell. MCQ Questions for Class 9 Maths Chapter 6 Lines and Angles with Answers MCQs from Class 9 Maths Chapter 6 – Lines and Angles are provided here to help students prepare for their upcoming Maths exam. An angle in 2D formed between 2 straight lines has an initial side, and a terminal side. Log in. Looking at the remaining angle, we can tell that it's definitely less than 45°, maybe about a 30° angle. A 90 degree bend is by far the most common for an Angle. 120 Degree Angle. Clearly, this is larger than 90 degrees. Construction of angle of 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165 and 180 degree newIt is written 130 degree in place of 135 degree by mistake. Adding angles. Join now. Join now. Basic rotations. Found 2 solutions by MathLover1, Alan3354: Answer by MathLover1(17568) (Show Source): You can put this solution on YOUR website! So if you have an exterior angle of 120 degrees, then the adjacent interior angle is 60 degrees (180 - 120 = 60). Practical Geometry […] Constructing 75° 105° 120° 135° 150° angles and more. Ron. Maths MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Add that to the 90° we already marked off, and we have about a 120° angle. Angles are created when two straight lines intersect. The place where the two lines meet is called the vertex, while the two lines are called the arms of the angle. A triangle has angle measures 15 degree, 120 degrees, and 45 degrees. hope this helps! When we study the relationship between angles and sides of a triangle, it is called Trigonometry. Area of an obtuse angle triangle = ½ * b * h , where b is the base and h is the height of the triangle. 1 decade ago. An angle it looks like this. Answer Save. Lv 4. It is formed when the two line segments make an angle of 90 degrees after joining. Explanation: The angle between the isometric axes is 120 degrees if any line is parallel to it then those are called isometric lines. College. The vector projection of v onto u is the vector The magnitude of this vector is known as the scalar projection of v onto u, given by ; Work is done when a force is applied to an object, causing displacement. what is a 120 degree angle called? Auxiliary lines may make any angle … An acute angle is an angle measuring between 0 and 90 degrees. a 90° angle, called a right angle, is made of two perpendicular lines. The angles formed by a nonzero vector and the coordinate axes are called the direction angles for the vector. 2. 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. Top Answer. Wiki User Answered . However, the relative phase angle between each pair of lines (1 to 2, 2 to 3, and 3 to 1) will still be −120°. 1 0 0 0 0. Find an answer to your question angles like 0 degrees 30 degrees 60 degree 90 degree 120 degree 180 degree called which angles 1. 360 degrees. These smaller units, however, can only be measured with high-precision instruments. I just want to know the mathematical relationships between AOV and FOV what I said above. A camera's angle of view depends not only on the lens, but also on the sensor. Formula of Obtuse Angle Triangle . Log in. Lv 6. Lv 7. 9 years ago. (The same matrices can also represent a clockwise rotation of the axes. 2 0. bheemshankarshankar2 bheemshankarshankar2 08.09.2020 Math Primary School +5 pts. 180 degrees - 90 degrees = 90 degrees. 4 0? Coterminal angles are angles that share the same initial side and terminal side. 2012-05-02 12:55:30 2012-05-02 12:55:30. 1 2. wiest. The Full Circle. Source(s): hope this helps. Each degree is divided into smaller units: 1 degree = 60 minutes (60'); 1 minute = 60 seconds (60"). 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. Terminal and Initial Sides of Angles. Unit quaternions, known as versors, provide a convenient mathematical notation for representing spatial orientations and rotations of elements in three dimensional space. I dont know why it doesnt show up in the question.. $\endgroup$ – Hilbert Oct 30 '13 at 17:24 $\begingroup$ Do you mean $\theta(x)$? For example 90° means 90 degrees. 1. Intersecting lines cut each other at: a) […] An example molecule is BH[math]_3[/math]. what is it? The two rays that form an angle are called the vertex of the angle. In tomography, the field of view is the area of each tomogram.In for example computed tomography, a volume of voxels can be created from such tomograms by merging multiple slices along the scan range.. The on an sided polygon add up to degrees. Having said that, if you want to know the measure of the longest side of your triangle, even though it isn't called … In all these areas, we use trigonometry functions for various purposes. A basic rotation (also called elemental rotation) is a rotation about one of the axes of a coordinate system. There are two possibilities to get three roughly 120 degree angles: 1. 1. Relevance. Log in. Now, suppose the generator has two magnets and two coils placed equidistantly, then the flicker rate is increased, it is 2-phase , 360/2=180 degrees AC. 5 points shercarlucci74 Asked 04/30/2020. 30 + 60 = 90. 4 years ago. Free PDF Download of CBSE Maths Multiple Choice Questions for Class8 with Answers Chapter 4 Practical Geometry. Angles can be effectively 'added' by constructing them so they share a side. It is always the side opposite the right angle. Another way of saying this would be “120 degrees is the supplement of 60 degrees.” Supplementary angles are easy to spot in diagrams because they make up a straight angle. Trigonometry is used in almost all fields. There are Angles with more than a 90 degree bend called Vee's. We call this an "obtuse angle." 3. You now know two angles in the triangle; 30 degrees and 60 degrees. Answer. Amar Soni. So for example, 60° and 120° are supplementary angles. This is how large 1 Degree is . Additionally, among the curves of constant width, the Reuleaux triangle is the one with both the largest and the smallest inscribed equilateral triangles. Join now. Adjust the angle above and try to create the full angle going around in both directions. Obtuse is 90 to 180 degrees and reflex is 180 to 360. 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? So let's call that maybe a 128-degree angle. Answered Angles like 0 degrees 30 degrees 60 degree 90 degree 120 degree 180 degree called which angles … Log in. Favourite answer. If I were to approximate, let's see, that's 100, 110, 120, almost 130. Ask your question . By combining them you can construct other angles. But before fully focusing on coterminal angles though, it helps to learn about the initial side and terminal side of an angle first. Asked by Wiki User. An angle that turns through 1/360 of a circle is called a 'one-degree angle,' and can be used to measure angles. the length of the side between the 15 degree and 120 degree angles is 8 degrees. 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. 1 decade ago . If you continue to increase an angle it will eventually 'double back' on itself and form a full 360° angle. 0 3. The phase angle difference between voltage and current of each phase is not necessarily 0 and is dependent on the type of load impedance, Z y. Inductive and capacitive loads will cause current to either lag or lead the voltage. This is called 360 deg, single phase AC. Say generator has 3 magnets and 3 coils placed equidistantly, then the flicker rate is much increased; it is 3 phase with 360/3=120 degrees AC. 120 degrees is then an obtuse angle. Thanks again! 3 4 5. On other pages there are instructions for constructing angles of 30°, 45°, 60° and 90°. The angles made by each pair of arcs at the corners of a Reuleaux triangle are all equal to 120°. You also didn't write what the angle is called, "let say..." $\endgroup$ – DonAntonio Oct 30 '13 at 17:23 $\begingroup$