Classify Polygons and Angles
I can classify polygons based on their properties.I can estimate the measure of an angle.
I can sketch an angle with approximately the given measure.I can measure angles using an angle ruler or protractor.
I can find the sum of the interior angles of any polygon.
Tessellations
I can use regular polygons to tile a surface without any overlaps or gaps.
Exterior Angles
I can find the measure of each exterior angle of a regular polygon.
Solving for Unknown Angles
I can solve equations for an unknown angle in a figure.
Designing Polygons
I can determine which combinations of three side lengths will make a triangle.
I can find the measure of any angle formed when two parallel lines are cut by a transversal.
I can classify polygons based on their properties.I can estimate the measure of an angle.
- Video tutorial #1
- Video tutorial #2
- Classifying angles practice
- Estimating angles game
- Alien Angles game
- Tic-Tac-Toe game
I can sketch an angle with approximately the given measure.I can measure angles using an angle ruler or protractor.
- Video tutorial #1
- Video tutorial #2
- Measuring angles practice
- You can choose the level that is right for you! (Level 1 is easiest and Level 4 is advanced.)
- Alien Angles game
- Bow and Angle game
I can find the sum of the interior angles of any polygon.
- Video tutorial #1
- Watch from 0:00-5:55. At 5:55, the teacher reveals the equation for the sum of the interior angles of a polygon. If you want more evidence that the equation works in all cases, then please watch the rest of the video!
- Video tutorial #2
- Sum of interior angles practice
- Sum of interior angles practice (advanced)
- Video tutorial #1
- Interior angles practice (regular polygons)
- In order to figure out the measure of each exterior angle, remember that the interior angle and the exterior angle measures should add up to 180 degrees.
- Interior angles practice (all polygons)
Tessellations
I can use regular polygons to tile a surface without any overlaps or gaps.
- Introduction to Tessellations Slideshow
- Introduction to Tessellations: M.C. Escher
- Video tutorial #1
- Tessellation creator
- How many regular tessellations are there? Try out each shape to see which ones work.
- Tessellation questions
Exterior Angles
I can find the measure of each exterior angle of a regular polygon.
Solving for Unknown Angles
I can solve equations for an unknown angle in a figure.
- Video tutorial #1 (triangles and quadrilaterals)
- Video tutorial #2 (polygons with more sides)
- Video tutorial #3 (polygons with variables)
- Solving for unknown angles practice
Designing Polygons
I can determine which combinations of three side lengths will make a triangle.
- Video tutorial #1
- Video tutorial #2
- Watch from 0:00-7:00 (the first two examples).
- Interactive exploration
- Read the instructions near the bottom of the page. What conclusions can you draw about the requirements for a triangle?
- Triangle side lengths practice
- Triangle side lengths game
I can find the measure of any angle formed when two parallel lines are cut by a transversal.
- Video tutorial #1 (vertical angles)
- Video tutorial #2 (all angles)
- Identifying vertical, complementary, and supplementary angles practice
- Finding angle measures practice
- Some of these questions require you to solve a two-step equation. We we will learn about two-step equations later in the year. If you have questions, please see Ms. Landis or visit the Moving Straight Ahead section of our class website. Moving Straight Ahead has resources about solving two-step equations.
- Finding angle measures practice (advanced)