Tuesday, February 18, 2014

Amazing Angles!

In geometry, we are learning about angles!


An angle is a  figure formed when two rays share the same endpoint.


 
Below is a special angle called a right angle.
It is also called a 90˚ angle.


Any angle less than a right is called an acute angle. 




Any angle greater than a right is called an obtuse angle. 



Below is a quiz. Can you guess each kind of angle?





 

Angle Quiz! on PhotoPeach



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Do you see any acute, right, or obtuse angles in your house?

Tell us about them!

4 comments:

  1. Dear Mrs. Ranney and class,

    I am Mrs. Yollis' student, Aashi. In class, we have been learning about angles too.

    I think obtuse and acute are much better vocabulary than greater than a right angle and less than a right angle. Another name for a right angle is a 90 degree angle. In class, we are using the lofty vocabulary words obtuse, acute, right angle, or 90 degree to enhance our vocabulary skills.

    I see a 90 degree angle on the American flag, a piece of paper, on a face of a microwave, the publish and preview buttons on your blog, Mrs. Yollis' blog, and some other blogs, the screen of my TV, and a capital L.

    I would see an acute angle on a slice of cheese pizza and any kind of V. I find obtuse angles on a analog clock when it strikes 6:00, an open book's edges, and a reclined driver's seat.

    What other letters have a right angle (90 degree), obtuse angle, or an acute angle?

    Sincerely,
    Aashi

    ReplyDelete
  2. Daniel (from Mrs. Yollis's class)February 20, 2014 at 3:40 PM

    Dear Mrs. Ranny and class,

    I see many right angle(90˚), acutes, and, obtuse in my house. There are many 90˚angles around you, even the computer I am using has 4 90˚angles

    Aashi, I agree with you 90˚angle, acutes, and, obtuse are a more accurate vocabulary. You used a lot of them, and I will try to get some in. I see a 90˚angle on the corners of a light switch, some tables corners, doors, and usually cabinets have them. For acute I have <>brackets, triangles, and an ice cream cone. Its not prefect, but a U. I am having a hard time thinking of a obtuse.

    Whats your favorite 90˚, obtuse, or acute?

    Sincerely,
    Daniel (from Mrs. Yollis's class)

    ReplyDelete
  3. Dear Class,

    In my house, I noticed some objects that have angles:
    One example is the corner of my kitchen counter. It is a right angle. Another one is when I open my fridge, it makes an obtuse angle. Here is another one, when I lift a basket (that holds our bread), it makes a small acute angle. Next, is a microwave. It has a right angle and when you open it, it has another right angle. Isn't that awesome!

    What objects can you find around the house?

    Your classmate,
    Jacob

    ReplyDelete
  4. Dear Class,

    I found objects that have right, obtuse or acute angles.
    For example, I saw the time, which was 5:19 PM. The angle between the hour hand and the minute hand is an acute angle.
    The wii machine has an obtuse angle. My picture frame has 4 right angles.

    I noticed that I found many things that have right angles in my house.
    My favorite angle is acute angle.
    How is your favorite angle?

    Cheers,
    Michelle

    ReplyDelete

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