Triangles
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by Felix Gabathuler
| 29 Questions
We just began working on triangles. Soon, we're going to blend triangles, circles, and quadrilaterals together in a way that nobody ever thought was possible...! To do that though, we're going to need to know all the lingo and be able to work with triangles in different forms.
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Naming angles
I'm cold
I'm warm!
If you'd like to review what complementary, supplementary, or vertical mean, watch the following videos. If not, move on to the lessons.
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Get hot with the following lesson:

Identifying supplementary, complementary, and vertical angles
I'm warm
I'm hot!
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Get hot hot hot with the following lessons (don't burn yourself!):

Complementary and Supplementary Angles: Part 1

Complementary and Supplementary Angles: Part 2
I'm warm
I'm hot hot hot!
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How's your vertical braaaa? Let's find out:

Vertical Angles
Vert's sick bro. I'm good
My vert is actually sick... like with the flu. Not good and not done
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Hmmmmm something is missing up there.... I don't know where to find that puzzle piece, but I do know how to find missing angles! Let's go find em!

Missing Angles
Found them all!
Ummm where are they...
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Keep looking!!

Calculating Missing Angles
Found them all!
Ummm where are they...
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Let's construct our own triangles now. You'll be needing the protractor soon enough. But until then, try these:

Constructing Triangles
Construction Complete!
The building collapsed... I need to start over
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Who's ready for some trivia?? YOU!!

Triangle Trivia Part 1

Triangle Trivia Part 2
Construction Complete!
The building collapsed... I need to start over
Do NOT skip the following videos! They include information we have not covered in class that is important! Watch them and take notes on anything you find interesting/relevant/important!
Only watch the first 60 seconds of the following video!
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Angle JKL should be 65 degrees, not 55 degrees
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Write your answer in terms of y. Example: y = something something something
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Just write the number, no symbols
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Just write the number, no symbols
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Just write the number, no symbols
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Just write the number, no symbols
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Just write the number, no symbols
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Using a protractor, construct an iscoceles triangle that has a 44 degree angle and a 68 degree angle. Make sure to label the angles and side lengths. Take a picture of your triangle and submit it below.
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Just write the letters, uppercase.
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Just write the number, no symbols
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Just write the number, no symbols
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Write yes or no only