Geometry (2012)

Other Texas Mathematics sets

• Grade K
• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Algebra I (2012)
• Grade 8
• Algebra II
• Algebraic Reasoning
• Discrete Mathematics
• Grade 9
• Statistics
• Advanced Quantitative Reasoning
• Grades 10, 11, 12
• Independent Study in Mathematics
• Mathematical Models with Applications
• Precalculus

The student uses the process skills to understand the connections between algebra and geometry and uses the one- and two-dimensional coordinate systems to verify geometric conjecturesG.9-12.2

determine the coordinates of a point that is a given fractional distance less than one from one end of a line segment to the other in one- and two-dimensional coordinate systems, including finding the midpointG.9-12.2.A

derive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of linesG.9-12.2.B

determine an equation of a line parallel or perpendicular to a given line that passes through a given pointG.9-12.2.C

The student uses the process skills to generate and describe rigid transformations (translation, reflection, and rotation) and non-rigid transformations (dilations that preserve similarity and reductions and enlargements that do not preserve similarity)G.9-12.3

describe and perform transformations of figures in a plane using coordinate notationG.9-12.3.A

determine the image or pre-image of a given two-dimensional figure under a composition of rigid transformations, a composition of non-rigid transformations, and a composition of both, including dilations where the center can be any point in the planeG.9-12.3.B

identify the sequence of transformations that will carry a given pre-image onto an image on and off the coordinate planeG.9-12.3.C

identify and distinguish between reflectional and rotational symmetry in a plane figureG.9-12.3.D

The student uses the process skills with deductive reasoning to understand geometric relationshipsG.9-12.4

distinguish between undefined terms, definitions, postulates, conjectures, and theoremsG.9-12.4.A

identify and determine the validity of the converse, inverse, and contrapositive of a conditional statement and recognize the connection between a biconditional statement and a true conditional statement with a true converseG.9-12.4.B

verify that a conjecture is false using a counterexampleG.9-12.4.C

compare geometric relationships between Euclidean and spherical geometries, including parallel lines and the sum of the angles in a triangleG.9-12.4.D

The student uses constructions to validate conjectures about geometric figuresG.9-12.5

investigate patterns to make conjectures about geometric relationships, including angles formed by parallel lines cut by a transversal, criteria required for triangle congruence, special segments of triangles, diagonals of quadrilaterals, interior and exterior angles of polygons, and special segments and angles of circles choosing from a variety of toolsG.9-12.5.A

construct congruent segments, congruent angles, a segment bisector, an angle bisector, perpendicular lines, the perpendicular bisector of a line segment, and a line parallel to a given line through a point not on a line using a compass and a straightedgeG.9-12.5.B

use the constructions of congruent segments, congruent angles, angle bisectors, and perpendicular bisectors to make conjectures about geometric relationshipsG.9-12.5.C

verify the Triangle Inequality theorem using constructions and apply the theorem to solve problemsG.9-12.5.D

The student uses the process skills with deductive reasoning to prove and apply theorems by using a variety of methods such as coordinate, transformational, and axiomatic and formats such as two-column, paragraph, and flow chartG.9-12.6

verify theorems about angles formed by the intersection of lines and line segments, including vertical angles, and angles formed by parallel lines cut by a transversal and prove equidistance between the endpoints of a segment and points on its perpendicular bisector and apply these relationships to solve problemsG.9-12.6.A

prove two triangles are congruent by applying the Side-Angle-Side, Angle-Side-Angle, Side-Side-Side, Angle-Angle-Side, and Hypotenuse-Leg congruence conditionsG.9-12.6.B

apply the definition of congruence, in terms of rigid transformations, to identify congruent figures and their corresponding sides and anglesG.9-12.6.C

verify theorems about the relationships in triangles, including proof of the Pythagorean Theorem, the sum of interior angles, base angles of isosceles triangles, midsegments, and medians, and apply these relationships to solve problemsG.9-12.6.D

prove a quadrilateral is a parallelogram, rectangle, square, or rhombus using opposite sides, opposite angles, or diagonals and apply these relationships to solve problemsG.9-12.6.E

The student uses the process skills in applying similarity to solve problemsG.9-12.7

apply the definition of similarity in terms of a dilation to identify similar figures and their proportional sides and the congruent corresponding anglesG.9-12.7.A

apply the Angle-Angle criterion to verify similar triangles and apply the proportionality of the corresponding sides to solve problemsG.9-12.7.B

The student uses the process skills with deductive reasoning to prove and apply theorems by using a variety of methods such as coordinate, transformational, and axiomatic and formats such as two-column, paragraph, and flow chartG.9-12.8

prove theorems about similar triangles, including the Triangle Proportionality theorem, and apply these theorems to solve problemsG.9-12.8.A

identify and apply the relationships that exist when an altitude is drawn to the hypotenuse of a right triangle, including the geometric mean, to solve problemsG.9-12.8.B

The student uses the process skills to understand and apply relationships in right trianglesG.9-12.9

determine the lengths of sides and measures of angles in a right triangle by applying the trigonometric ratios sine, cosine, and tangent to solve problemsG.9-12.9.A

apply the relationships in special right triangles 30°-60°-90° and 45°-45°-90° and the Pythagorean theorem, including Pythagorean triples, to solve problemsG.9-12.9.B

The student uses the process skills to recognize characteristics and dimensional changes of two- and three-dimensional figuresG.9-12.10

identify the shapes of two-dimensional cross-sections of prisms, pyramids, cylinders, cones, and spheres and identify three-dimensional objects generated by rotations of two-dimensional shapesG.9-12.10.A

determine and describe how changes in the linear dimensions of a shape affect its perimeter, area, surface area, or volume, including proportional and non-proportional dimensional changeG.9-12.10.B

The student uses the process skills in the application of formulas to determine measures of two- and three-dimensional figuresG.9-12.11

apply the formula for the area of regular polygons to solve problems using appropriate units of measureG.9-12.11.A

determine the area of composite two-dimensional figures comprised of a combination of triangles, parallelograms, trapezoids, kites, regular polygons, or sectors of circles to solve problems using appropriate units of measureG.9-12.11.B

apply the formulas for the total and lateral surface area of three-dimensional figures, including prisms, pyramids, cones, cylinders, spheres, and composite figures, to solve problems using appropriate units of measureG.9-12.11.C

apply the formulas for the volume of three-dimensional figures, including prisms, pyramids, cones, cylinders, spheres, and composite figures, to solve problems using appropriate units of measureG.9-12.11.D

The student uses the process skills to understand geometric relationships and apply theorems and equations about circlesG.9-12.12

apply theorems about circles, including relationships among angles, radii, chords, tangents, and secants, to solve non-contextual problemsG.9-12.12.A

apply the proportional relationship between the measure of an arc length of a circle and the circumference of the circle to solve problemsG.9-12.12.B

apply the proportional relationship between the measure of the area of a sector of a circle and the area of the circle to solve problemsG.9-12.12.C

describe radian measure of an angle as the ratio of the length of an arc intercepted by a central angle and the radius of the circleG.9-12.12.D

show that the equation of a circle with center at the origin and radius r is x² + y² = r² and determine the equation for the graph of a circle with radius r and center (h, k), (x - h)² + (y - k)² =r²G.9-12.12.E

The student uses the process skills to understand probability in real-world situations and how to apply independence and dependence of eventsG.9-12.13

develop strategies to use permutations and combinations to solve contextual problemsG.9-12.13.A

determine probabilities based on area to solve contextual problemsG.9-12.13.B

identify whether two events are independent and compute the probability of the two events occurring together with or without replacementG.9-12.13.C

apply conditional probability in contextual problemsG.9-12.13.D

apply independence in contextual problemsG.9-12.13.E