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hyperpallium

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Questions (21)

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33	A way to directly see that the interior angles of triangle sum to $180^\circ$?
3	prove $x+y=a, xy=b$ uniquely determine $x,y$
2	Is there a term analogous to factoring, for addition?
2	Seeing why horizontal shifts are reversed?
2	Fundamental Theorem of Algebra proof, for max real roots of real polynomials - using only high school algebra-precalc?

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Reputation (408)

+5	A way to directly see that the interior angles of triangle sum to $180^\circ$?
+15	prove $x+y=a, xy=b$ uniquely determine $x,y$
+5	Does “standard polynomial form” define an ordering of terms of equal order e.g. $xy^2 + x^2y$
+5	Why doesn't $\sqrt{ab}=\sqrt{a}\sqrt{b}$ work for $a,b<0$?

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Answers (7)

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1	How do you revise material that you already half-know, without getting bored and demotivated?
1	A way to directly see the Inscribed angle theorem? (i.e. central angle is twice the inscribed angle)
0	Simple description/name for 0/1 in second position in binary? (analogous to even/odd for 0/1 in first position)
0	A way to directly see that the interior angles of triangle sum to $180^\circ$?
0	A more direct way to see that the angle inscribed in a semicircle is $90^\circ$?

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Tags (27)

1 geometry × 7	0 polynomials × 5
1 visualization × 7	0 arithmetic × 4
1 soft-question × 2	0 integers × 4
1 self-learning	0 terminology × 3
0 algebra-precalculus × 8	0 complex-numbers × 3

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	Mathematics	408 rep	313
	Computational Science	272 rep	310
	Stack Overflow	211 rep	212
	Computer Science	193 rep	9
	Writing	191 rep	5

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47	up		5	question		3
0	down		42	answer		3

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