options: Experiment with transformations in the plane.

Understand congruence in terms of rigid motions.

Apply geometric concepts in modeling situations.

Understand congruence and similarity using physical models, transparencies, or geometry software.

Reason with shapes and their attributes.

Prove theorems involving similarity.

Use coordinates to prove simple geometric theorems algebraically.

Make geometric constructions.

Analyze, compare, create, and compose shapes.

Translate between the geometric description and the equation for a conic section.

Draw and identify lines and angles, and classify shapes by properties of their lines and angles.

Graph points on the coordinate plane to solve real-world and mathematical problems.

Draw, construct, and describe geometrical figures and describe the relationships between them.

Explain volume formulas and use them to solve problems.

Classify two-dimensional figures into categories based on their properties.

Solve real-world and mathematical problems involving volume of cylinders, cones, and spheres.

Solve real-world and mathematical problems involving area, surface area, and volume.

Apply trigonometry to general triangles.

Understand and apply theorems about circles.

Define trigonometric ratios and solve problems involving right triangles.

Solve real-life and mathematical problems involving angle measure, area, surface area, and volume.

Prove geometric theorems.

Visualize relationships between two-dimensional and three-dimensional objects.

Find arc lengths and areas of sectors of circles.

Understand and apply the Pythagorean Theorem.

Understand similarity in terms of similarity transformations.

Identify and describe shapes (squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres).
problem_activity: Narrative
The purpose of this activity is for students to practice drawing and describing figures with points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines.
Students draw two-dimensional figures and then describe it to their partner. Their partner attempts to draw the figure without seeing it, making it important to use precise language to communicate important features of the figure (MP6).
Representation: Develop Language and Symbols.
Provide students with access to definitions or reminders of recently learned terms, such as: ray, line segment, right angle, acute angle, obtuse angle, perpendicular lines, parallel lines.
Supports accessibility for: Memory, Conceptual Processing, Attention
Required Materials
Materials to Gather
Rulers or straightedges
Launch
Groups of 2
Activity
5 minutes: independent work time
8–10 minutes: partner work time
Monitor for diagrams that reflect a variety of geometric features.
Monitor for students who consider both geometric features and measurement in the description.
Student Facing
Create a two-dimensional shape that has at least 3 of the following:
ray
line segment
right angle
acute angle
obtuse angle
perpendicular lines
parallel lines
Without showing your partner, describe the figure so that your partner is able to draw it as best as possible.
Switch roles, and draw your partner’s shape based on their description.
Student Response
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Activity Synthesis
Invite previously selected students to share.
“What would have helped your partner make a more accurate drawing?” (If I described the measure of the angle, measure of the line segment, the location, a grid, using a straight edge)


correct_option_index: 10