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Obtuse Angles

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What can you learn by looking at the letter K?

 

When the letter K is turned on its side, we see an angle >90º (greater than 90º).

 

Therefore...

 

When you look at the letter K, you see an OBTUSE ANGLE.

 

Review: What is an obtuse angle?
Where are the obtuse angles? How many can you find?

An obtuse angle has a measure greater than 90º.


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Are there other letters with obtuse angles?

How many obtuse angles does the letter X have? Make an educated guess and then push the button on the right to find out.
Can you spot the obtuse angles in the letter Y? Guess how many there are and then click the button on the right to find out if you were correct.

 

Quick Quiz

An obtuse angle can have a measure of 85º.

True

False

 

Angle A

Angle B

 

Which angle above is an obtuse angle?

Angle A

Angle B

 

 

Acute Angles | Obtuse Angles | Right Angles | Vertical Angles

 

More Alphabet Geometry

 

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