Triangles and Circle Angles

The lesson covers converting angle measures from fractions to degrees, classifying angles as acute, obtuse, or right, and classifying triangles based on their angles. It begins with an introduction to angles and the 360-degree measure of a circle. The process of converting fractions to degrees is explained with examples. The lesson then moves on to identifying different types of angles and concludes with classifying triangles based on their angles.

What is the total number of degrees in a circle?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees

Why do we convert fractions to have a denominator of 360 when finding degrees?

• Because it is a standard practice

• Because 360 is a round number

• Because a circle measures 360 degrees

• Because it makes calculations easier

How do you convert 5/8 of a circle into degrees?

• Add 45

• Multiply by 45

• Divide by 8

• Multiply by 360

What is the degree measure of 5/8 of a circle?

• 360 degrees

• 180 degrees

• 90 degrees

• 225 degrees

If a circle is divided into 95/360, what is the angle in degrees?

• 85 degrees

• 95 degrees

• 100 degrees

• 90 degrees

What is a right angle?

• An angle greater than 90 degrees

• An angle equal to 180 degrees

• An angle equal to 90 degrees

• An angle less than 90 degrees

Which angle is considered acute?

• An angle less than 90 degrees

• An angle equal to 90 degrees

• An angle equal to 180 degrees

• An angle greater than 90 degrees

What defines an obtuse angle?

• An angle less than 90 degrees

• An angle equal to 90 degrees

• An angle greater than 90 degrees

• An angle equal to 180 degrees

How many acute angles does an acute triangle have?

• One

• Two

• Three

• None

What type of triangle has one right angle?

• Equilateral triangle

• Right triangle

• Obtuse triangle

• Acute triangle