Angle Measures in Polygons

The video tutorial guides Math 8 students through a lesson on rotation and tessellation. It begins with setup instructions, offering both digital and tactile options for completing the exercises. The lesson focuses on fitting shapes like equilateral triangles, squares, hexagons, parallelograms, right triangles, octagons, and pentagons around a vertex to explore their angles. Students are encouraged to use a PowerPoint file to manipulate shapes digitally. The tutorial concludes with a summary and a preview of the next lesson.

What are the two options for completing the lesson activities?

• Watch a video or read a textbook.

• Attend a live class or a recorded session.

• Print the page and cut out shapes or use a digital PowerPoint.

• Use a calculator or a ruler.

How many equilateral triangles fit around a single vertex without gaps or overlaps?

• Six

• Seven

• Four

• Five

What is the measure of each angle in an equilateral triangle?

• 120°

• 90°

• 60°

• 45°

How many degrees is each angle in a square?

• 120°

• 90°

• 60°

• 45°

What is the measure of each angle in a hexagon?

• 60°

• 90°

• 150°

• 120°

In a parallelogram, what are the two different angle measures found?

• 90° and 150°

• 60° and 120°

• 30° and 150°

• 45° and 135°

What is the measure of the right angle in a right triangle?

• 120°

• 90°

• 45°

• 60°

How many degrees is each angle in an octagon?

• 135°

• 150°

• 90°

• 120°

How many 90° angles are there in a pentagon?

• Two

• Four

• One

• Three

What is the measure of the largest angle found in the pentagon?

• 120°

• 150°

• 90°

• 135°