To understand and calculate a variety of angles
Learning Intention:
Learning Intention:
Success Criteria:
To explain angles based on degree To describe angles based on name To calculate angles in a real-world situation
An angle is the amount of rotation between two lines or planes. Angles can be measured using a protractor or by calculating the ratio of the lengths of two line segments. Angles can be used to solve a variety of problems in mathematics and science.
Identifying and Measuring Angles
Angle: a figure formed by two rays, or sides, with a common endpoint called the vertex. Acute Angle: an angle that measures between 0 and 90 degrees. Obtuse Angle: an angle that measures between 90 and 180 degrees. Reflect Angle: an angle that measures more than 180 degrees
Concepts:
The angle used in most construction is the 90-degree angle, which is also known as a right angle. The angle of the Earth's axis is 23.5 degrees, which is why we experience the seasonal changes we experience on Earth.
Did you know?
Work together in pairs: What type of angle is greater than 90 degrees but less than 180 degrees?
Brain break: Draw a flamingo balancing on one leg while juggling a fish and a tennis ball
Which angle measures exactly 90 degrees?
- Acute angle
- Obtuse angle
- Right angle
What is the measure of a straight angle?
- 45 degrees
- 180 degrees
- 360 degrees
An angle that measures less than 90 degrees is called:
- Right Angle
- Obtuse Angle
- Acute angle
What type of angle measures more than 90 degrees but less than 180 degrees?
- Reflex Angle
- Obtuse Angle
- Straight Angle