Understanding Angles and Clock Angles

The video tutorial, presented by Eka Wahyu Jatmiko, covers the concept of angles, starting with a basic definition and moving on to different types of angles such as full circle (360°), half circle (180°), right angle (90°), acute, and obtuse angles. It then explores how angles are formed by the hands of a clock, explaining the calculation of angles between different clock numbers. The tutorial provides examples to illustrate these calculations, helping viewers understand how to determine angles based on time. The video concludes with a recap of the key angle concepts discussed.

What is an angle formed by two intersecting lines called?

• A vertex

• An angle

• A circle

• A point

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Which angle is formed by a full circle?

• 45°

• 90°

• 180°

• 360°

Tags

CCSS.4.G.A.1

What is the measure of a right angle?

• 45°

• 90°

• 180°

• 360°

Tags

CCSS.4.G.A.1

An angle less than 90° is known as?

• Full angle

• Acute angle

• Right angle

• Obtuse angle

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

How many degrees are there in a half circle?

• 360°

• 180°

• 90°

• 270°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

How many degrees are between each hour mark on a clock?

• 60°

• 15°

• 45°

• 30°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What angle is formed by the clock hands at 3:00?

• 360°

• 270°

• 180°

• 90°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

At what time do the clock hands form a 180° angle?

• 3:00

• 6:00

• 9:00

• 12:00

Tags

CCSS.HSG.CO.A.1

CCSS.4.MD.C.5B

What angle is formed by the clock hands at 9:00?

• 360°

• 270°

• 180°

• 90°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What is the angle between the clock hands at 12:30?

• 0°

• 360°

• 90°

• 180°

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1