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Angles - PowerPoint PPT Presentation


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Angles. Look around the room. Have you ever noticed all of the angles. The angles of corners, objects on your desk. Even the angle your elbow makes when you lean on the desk. Types of Angles. Right Angle. Acute Angle. Obtuse Angle. Right Angles.

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Presentation Transcript
slide2

Look around the room.

Have you ever noticed all of the angles.

The angles of corners,

objects on your desk

Even the angle your elbow

makes when you lean on the desk

slide3

Types of Angles

Right Angle

AcuteAngle

ObtuseAngle

right angles
Right Angles
  • Angles with one corner equal to 90 degrees
  • It doesn’t matter which way the corner is facing
acute angles
Acute Angles
  • Angles with one corner less than 90 degrees
  • It doesn’t matter which way the corner is facing
obtuse angles
Obtuse Angles
  • Angles with one corner greater than 90 degrees
  • It also doesn’t matter which way the corner is facing
but don t get stressed out here are a few ways to remember which angle is which
But don’t get stressed out.Here are a few ways to remember which angle is which.
  • The letter “a” comes before the letter “o” in the alphabet. “a” for acute, represents a smaller angle (less than 90 degrees) than “o” for obtuse (an angle greater than 90 degrees)
  • The letter “r” for right triangle, represents an angle that can sit up right with one line straight out connected to another line straight up
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Lets Test Your Knowledge

Here are some angles.

Are they right, acute, or obtuse?

obtuse

right

obtuse

acute

acute

slide9

CONGRATULATIONS !!!

You’ve all just mastered the skills it takes to differentiate

Right, Acute, and Obtuse angles!!!