Name the three types of angles?
Angle: A figure formed by two rays, or sides, sharing a common endpoint. Right Angle: An angle that measures exactly 90 degrees. Acute Angle: An angle that measures less than 90 degrees.
What is the difference between a right angle and an acute angle?
What measures are used to calculate the size of an angle?
Can you think of any real-life examples of angles?
How can knowledge of angles help you understand other mathematical concepts?
Brain break: Draw a fish riding a bicycle
What is the sum of angles in a triangle?
- 180 degrees
- 90 degrees
- 270 degrees
What is the name of an angle that measures exactly 90 degrees?
- Acute angle
- Obtuse angle
- Right angle
'Straight' is an example of what type of angle?
- Obtuse Angle
- Right Angle
- 180-degree angle
Which type of angles are complementary?
- Angles whose sum equals 90°
- Angles that have the same measure
- Angles that add up to 360°
What do we call two angles whose sum adds up to 180 degrees?
- Vertical Angles
- Supplementary Angles
- Complementary Angles
Work together in pairs: What is the definition of an obtuse angle?