MG4 Page 1 of 16
... not equal, they are twice as big. We can draw many different sized triangles with the same angles, but having different sizes. The important point to remember in similar triangles is that the angles are the same and the corresponding sides are in the same ratio. ...
... not equal, they are twice as big. We can draw many different sized triangles with the same angles, but having different sizes. The important point to remember in similar triangles is that the angles are the same and the corresponding sides are in the same ratio. ...
Math 1330
... Two special triangles are 30 − 60 − 90 triangles and 45 − 45 − 90 triangles. With little additional information, you should be able to find the lengths of all sides of one of these special triangles. First we’ll review some conventions when working with triangles. We label angles with capital ...
... Two special triangles are 30 − 60 − 90 triangles and 45 − 45 − 90 triangles. With little additional information, you should be able to find the lengths of all sides of one of these special triangles. First we’ll review some conventions when working with triangles. We label angles with capital ...
Geometry Midterm
... In the proof, what is the reason for statement 6? A. If two lines are cut by a transversal, and the alternate interior angles are congruent, then the lines are parallel. B. If two lines are cut by a transversal, and the same-side interior angles are congruent, then the lines are parallel. C. If two ...
... In the proof, what is the reason for statement 6? A. If two lines are cut by a transversal, and the alternate interior angles are congruent, then the lines are parallel. B. If two lines are cut by a transversal, and the same-side interior angles are congruent, then the lines are parallel. C. If two ...
Euler angles
The Euler angles are three angles introduced by Leonhard Euler to describe the orientation of a rigid body. To describe such an orientation in 3-dimensional Euclidean space three parameters are required. They can be given in several ways, Euler angles being one of them; see charts on SO(3) for others. Euler angles are also used to describe the orientation of a frame of reference (typically, a coordinate system or basis) relative to another. They are typically denoted as α, β, γ, or φ, θ, ψ.Euler angles represent a sequence of three elemental rotations, i.e. rotations about the axes of a coordinate system. For instance, a first rotation about z by an angle α, a second rotation about x by an angle β, and a last rotation again about z, by an angle γ. These rotations start from a known standard orientation. In physics, this standard initial orientation is typically represented by a motionless (fixed, global, or world) coordinate system; in linear algebra, by a standard basis.Any orientation can be achieved by composing three elemental rotations. The elemental rotations can either occur about the axes of the fixed coordinate system (extrinsic rotations) or about the axes of a rotating coordinate system, which is initially aligned with the fixed one, and modifies its orientation after each elemental rotation (intrinsic rotations). The rotating coordinate system may be imagined to be rigidly attached to a rigid body. In this case, it is sometimes called a local coordinate system. Without considering the possibility of using two different conventions for the definition of the rotation axes (intrinsic or extrinsic), there exist twelve possible sequences of rotation axes, divided in two groups: Proper Euler angles (z-x-z, x-y-x, y-z-y, z-y-z, x-z-x, y-x-y) Tait–Bryan angles (x-y-z, y-z-x, z-x-y, x-z-y, z-y-x, y-x-z). Tait–Bryan angles are also called Cardan angles; nautical angles; heading, elevation, and bank; or yaw, pitch, and roll. Sometimes, both kinds of sequences are called ""Euler angles"". In that case, the sequences of the first group are called proper or classic Euler angles.