Lessons 61-65
Starting point of a vector.
What is the initial point of a vector.
Length of a vector (distance).
What is the magnitude of a vector.
The point that is equidistant from all vertices of the regular polygon.
What is the center of a regular polygon.
The shape that results from a transformation.
What is an image.
The original figure in a transformation.
What is a preimage.
Two vectors that have the same magnitude and the same direction.
What are equal vectors.
Vectors that have the same magnitude but opposite direction.
What are opposite vectors.
Angle whose vertex is the center of the regular polygon and whose sides pass through consecutive vertices.
What is the central angle of a regular polygon.
A transformation that does not change the size or shape of a figure.
What is isometry (congruence transformation/rigid transformation).
A transformation that "flips" a figure over a mirror or reflection line.
What is a reflection.
The orientation of a vector, which is determined by the angle the vector makes with a horizontal line.
What is the direction of a vector.
A vector that represents the sum of two given vectors.
What is a resultant vector.
The perpendicular distance from the center of a regular polygon to a side of the polygon.
What is the apothem.
A transformation in which a figure is turned around a point.
What is a rotation.
A change in position, size, or shape of a figure.
What is a transformation.
A quantity that only has magnitude.
What is scalar.
Multiplication of a vector by a scalar.
What is scalar multiplication of a vector.
A transformation that "slides" each point of a figure the same distance in the same direction.
What is a translation.
A ratio of lengths of two sides in a right triangle.
What is a trigonometric ratio.
The study of the relationship between sides and angles of triangles.
What is trigonometry.
A quantity that has magnitude and direction.
What is a vector.
A segment or arc subtends an angle if the endpoints of the segment or arc lie on the sides of the angle.
What is a subtend.
In a right triangle, the ratio of the length of the leg adjacent to the angle to the length of the hypotenuse.
What is the cosine of an angle.
In a right triangle, the ratio of the length of the leg opposite the angle to the length of the hypotenuse.
What is the sine of an angle.
In a right triangle, the ratio of the length of the leg opposite the angle to the length of the leg adjacent to the angle.
What is the tangent of an angle.