GEOMETRY DOMAIN
Math is Fun - Geometry of a Sphere
- 8.G.1 - Verify experimentally the properties of rotations, reflections, and translations:
- 8.G.1a - Lines are taken to lines, and line segments to line segments of the same length.
- 8.G.1b - Angles are taken to angles of the same measure.
- 8.G.1c - Parallel lines are taken to parallel lines.
- 8.G.2 - Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.
- 8.G.3 - Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
- 8.G.4 - Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, anddilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.
- Angles of a triangle
- Learnzillion - angle sums and exterior angles
- Sum of Interior Angles of a Triangle - youtube video
- Learnzillion - parallel lines cut by a transversal
- Corresponding angles
- Vertical & adjacent angles
- Alternate interior & exterior angles
- 8.G.6 - Explain a proof of the Pythagorean Theorem and its converse.
- 8.G.7 - Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.
Math is Fun - Geometry of a Sphere