Angle Measurement and Properties

This lesson covers the relationships and measurements of angles, including acute, obtuse, and right angles. It uses pattern blocks to explore angle measures and demonstrates how to calculate angles using circles. The lesson also discusses fitting hexagons and pentagons around a point and measuring angles with a protractor. The session concludes with a summary and homework discussion.

What determines the size of an angle?

• The thickness of the lines

• The space between the rays

• The length of the sides

• The color of the rays

Which angle is greater than 90 degrees?

• Straight angle

• Obtuse angle

• Right angle

• Acute angle

Which shape has only one unique angle?

• Pentagon

• Hexagon

• Rhombus

• Trapezoid

How many degrees are in one angle of a regular hexagon?

• 120 degrees

• 150 degrees

• 90 degrees

• 60 degrees

How many equilateral triangles are needed to form a straight angle?

• Three

• Two

• Five

• Four

What is the degree measure of a right angle?

• 180 degrees

• 90 degrees

• 360 degrees

• 45 degrees

What is the degree measure of an angle in a regular octagon?

• 150 degrees

• 135 degrees

• 120 degrees

• 108 degrees

If a water tank decreases by 3.5 cm each day, how many days will it take to drop from 10m to 4m?

• 100 days

• 171 days

• 200 days

• 1714 days

What is the measure of a straight angle?

• 270 degrees

• 180 degrees

• 360 degrees

• 90 degrees

How many days does it take for a puppy to gain one pound if it gains 0.125 pounds per day?

• 8 days

• 10 days

• 4 days

• 6 days