Acute, Obtuse, and Right Angles

This video tutorial introduces the concept of angles in geometry, explaining their formation and types, including right, acute, and obtuse angles. It covers how to measure angles using a protractor and emphasizes the importance of measuring the interior of angles. The tutorial also guides viewers in identifying angles without tools and encourages finding angles in everyday environments, such as clocks and window frames.

What is the common point where two lines or rays meet to form an angle called?

• Exterior

• Leg

• Vertex

• Interior

Which tool is used to measure and draw angles?

• Compass

• Ruler

• Set Square

• Protractor

An angle that measures more than 0° but less than 90° is known as?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

Which type of angle measures more than 90° but less than 180°?

• Reflex angle

• Right angle

• Acute angle

• Obtuse angle

If the clock reads 9:00, what type of angle is formed by the clock hands?

• Right angle

• Obtuse angle

• Acute angle

• Straight angle

What kind of angle is formed when the clock reads 3:20?

• Straight angle

• Obtuse angle

• Acute angle

• Right angle

Which type of angle is represented by the arms of a Japanese fan?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle