Mathematics | Course : Model Mathematics I (Integrated Pathway)
Domain - Congruence
Cluster - Experiment with transformations in the plane.
[MI.G-CO.A.5] - Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another.
- Reflection
A type of transformation that flips points about a line, called the line of reflection. Taken together, the image and the pre-image have the line of reflection as a line of symmetry. - Rotation
A type of transformation that turns a figure about a fixed point, called the center of rotation. - Transformation
A prescription, or rule, that sets up a one-to-one correspondence between the points in a geometric object (the pre-image) and the points in another geometric object (the image). Reflections, rotations, translations, and dilations are particular examples of transformations. - Translation
A type of transformation that moves every point in a graph or geometric figure by the same distance in the same direction without a change in orientation or size.
[MI.G-CO.A.3] -
Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.
[MI.G-CO.A.4] -
Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.
[MI.G-CO.B.6] -
Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent.
[MII.G-CO.C.9] -
Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent, and conversely prove lines are parallel; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment’s endpoints.
[MII.G-SRT.A.1] -
Verify experimentally the properties of dilations given by a center and a scale factor: