### GM: G: Geometry

#### GM: G-CO: Congruence

GM: G-CO.A: Experiment with transformations in the plane.

GM: G-CO.A.1: Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.

GM: G-CO.A.2: Represent transformations in the plane using, e.g., transparencies, tracing paper, or geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g., translation versus horizontal stretch).

GM: G-CO.A.3: Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.

GM: G-CO.A.4: Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.

GM: 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.

GM: G-CO.B: Understand congruence in terms of rigid motions.

GM: 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.

GM: G-CO.B.8: Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions.

GM: G-CO.C: Prove and apply geometric theorems.

GM: G-CO.C.9: Prove and apply 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; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment’s endpoints.

GM: G-CO.C.10: Prove and apply theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.

GM: G-CO.C.11: Prove and apply theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.

GM: G-CO.D: Make geometric constructions.

GM: G-CO.D.12: Make formal geometric constructions with a variety of tools and methods, e.g., compass and straightedge, string, reflective devices, paper folding, or dynamic geometric software.

GM: G-CO.D.13: Construct an equilateral triangle, a square, and a regular hexagon inscribed in a circle.

#### GM: G-SRT: Similarity, Right Triangles, and Trigonometry

GM: G-SRT.A: Understand similarity in terms of similarity transformations.

GM: G-SRT.A.1: Verify experimentally the properties of dilations given by a center and a scale factor:

GM: G-SRT.A.1.a: A dilation takes a line not passing through the center of the dilation to a parallel line, and leaves a line passing through the center unchanged.

GM: G-SRT.A.1.b: The dilation of a line segment is longer or shorter in the ratio given by the scale factor.

GM: G-SRT.A.2: Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.

GM: G-SRT.A.3: Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.

GM: G-SRT.B: Prove and apply theorems involving similarity.

GM: G-SRT.B.4: Prove and apply theorems about triangles.

GM: G-SRT.B.5: Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

GM: G-SRT.C: Define trigonometric ratios and solve problems involving right triangles.

GM: G-SRT.C.6: Understand that by similarity, side ratios in right triangles, including special right triangles (30-60-90 and 45-45-90), are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.

GM: G-SRT.C.8: Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems.

#### GM: G-C: Circles

GM: G-C.A: Understand and apply theorems about circles.

GM: G-C.A.2: Identify and describe relationships among inscribed angles, radii, and chords, including the following: the relationship that exists between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; and a radius of a circle is perpendicular to the tangent where the radius intersects the circle.

GM: G-C.A.3: Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.

GM: G-C.B: Find arc lengths and areas of sectors of circles.

GM: G-C.B.5: Use similarity to determine that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

#### GM: G-GPE: Expressing Geometric Properties with Equations

GM: G-GPE.A: Translate between the geometric description and the equation for a conic section.

GM: G-GPE.A.1: Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square to find the center and radius of a circle given by an equation.

GM: G-GPE.B: Use coordinates to prove simple geometric theorems algebraically.

GM: G-GPE.B.7: Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula.

#### GM: G-GMD: Geometric Measurement and Dimension

GM: G-GMD.A: Explain volume formulas and use them to solve problems.

GM: G-GMD.A.1: Give an informal argument, e.g., dissection arguments, Cavalieri’s principle, or informal limit arguments, for the formulas for the circumference of a circle; area of a circle; volume of a cylinder, pyramid, and cone.

GM: G-GMD.A.3: Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems.

### GM: S: Statistics and Probability

#### GM: S-CP: Conditional Probability and the Rules of Probability

GM: S-CP.A: Understand independence and conditional probability and use them to interpret data.

GM: S-CP.A.1: Describe events as subsets of a sample space (the set of outcomes) using characteristics (or categories) of the outcomes, or as unions, intersections, or complements of other events (“or,” “and,” “not”).

GM: S-CP.A.2: Understand that two events A and B are independent if the probability of A and B occurring together is the product of their probabilities, and use this characterization to determine if they are independent.

GM: S-CP.A.3: Understand the conditional probability of A given B as P(A and B)/P(B), and interpret independence of A and B as saying that the conditional probability of A given B is the same as the probability of A, and the conditional probability of B given A is the same as the probability of B.

GM: S-CP.A.4: Construct and interpret two-way frequency tables of data when two categories are associated with each object being classified. Use the two-way table as a sample space to decide if events are independent and to approximate conditional probabilities.

GM: S-CP.A.5: Recognize and explain the concepts of conditional probability and independence in everyday language and everyday situations.

GM: S-CP.B: Use the rules of probability to compute probabilities of compound events in a uniform probability model.

GM: S-CP.B.6: Find the conditional probability of A given B as the fraction of B’s outcomes that also belong to A, and interpret the answer in terms of the model.

Correlation last revised: 9/15/2020

This correlation lists the recommended Gizmos for this state's curriculum standards. Click any Gizmo title below for more information.