Area of a triangle (one even and one odd length): b2\frac{b}{2}2b ×h \times h×h or b×b \timesb× h2\frac{h}{2}2h
Example 111:
b=8b = 8b=8
h=9h = 9h=9
Method 111 (Normal):
8×9=72÷2=368 \times 9 = 72 \div 2 = 368×9=72÷2=36
Method 222 (Mine):
82\frac{8}{2}28 ×9=4×9=36\times 9 = 4 \times 9 = 36×9=4×9=36
Example 222:
b=7b = 7b=7
h=2h = 2h=2
7×2=14÷2=77 \times 2 = 14 \div 2 = 77×2=14÷2=7
7×7 \times7× 22=7×1=7\frac{2}{2} = 7 \times 1 = 722=7×1=7
Note by Yajat Shamji 9 months, 3 weeks ago
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Nice! Just remember when working out don't say 89 = 72/2 cause that means 89=36!
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Thanks!
b/2 x h is the same old triangle area formula. I'm seeing a lot of these notes that are pretty redundant lately.
@Yajat Shamji
No, it isn't - it's a variation...
It doesn’t have to be one even and one odd; it doesn’t even have to be integers.\text{\Huge It doesn't have to be one even and one odd; it doesn't even have to be integers.}It doesn’t have to be one even and one odd; it doesn’t even have to be integers.
I am just showing it for integers to show that you can alter the formula.
@Vinayak Srivastava, @Mahdi Raza, @Frisk Dreemurr
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Easy Math Editor
This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
When posting on Brilliant:
*italics*
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> This is a quote
\(
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or\[
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to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
Comments
Nice! Just remember when working out don't say 89 = 72/2 cause that means 89=36!
Log in to reply
Thanks!
b/2 x h is the same old triangle area formula. I'm seeing a lot of these notes that are pretty redundant lately.
Log in to reply
@Yajat Shamji
No, it isn't - it's a variation...
It doesn’t have to be one even and one odd; it doesn’t even have to be integers.
Log in to reply
I am just showing it for integers to show that you can alter the formula.
@Vinayak Srivastava, @Mahdi Raza, @Frisk Dreemurr