Question

It's given $ABCD$ an isosceles trapezioid with $A(2,6,-3,9),\, B(4,4,7,3),\, C(8,2,7,-1)$, $AB||CD$, find $D$.

score 80 · Answer 1 · 2026-04-16 11:11:44

80

Views

It's given $ABCD$ an isosceles trapezioid with $A(2,6,-3,9),\, B(4,4,7,3),\, C(8,2,7,-1)$, $AB||CD$, find $D$.

Published on 16 Apr 2026 - 11:11

score 384 · Answer 2 · 2026-04-15 09:31:51

384

Views

Coordinate proof that the sum of a triangle's angles is $180^\circ$?

Published on 15 Apr 2026 - 9:31

score 51 · Answer 3 · 2026-04-11 21:15:59

51

Views

How to find third coordinate $O(x,y,z)$ on plane $E$ by using two known points, degrees.

Published on 11 Apr 2026 - 21:15

score 52 · Answer 4 · 2026-04-11 01:33:38

52

Views

Calculus Curve Derivative Lemma

Published on 11 Apr 2026 - 1:33

score 45 · Answer 5 · 2026-04-07 17:30:57

45

Views

Linear Algebra: How do I prove the following?

Published on 07 Apr 2026 - 17:30

score 56 · Answer 6 · 2026-04-16 14:07:10

56

Views

How to characterize the angle of a vector with the same angle to each of a set of vectors

Published on 16 Apr 2026 - 14:07

score 581 · Answer 7 · 2026-04-17 22:20:26

581

Views

Why do sometimes care for where vectors originate from and sometimes not? and exactly how many kinds of vectors are there?

Published on 17 Apr 2026 - 22:20

score 174 · Answer 8 · 2026-03-26 22:42:19

174

Views

Prove that a function in $\mathbb R^n$ is surjective

Published on 26 Mar 2026 - 22:42

score 254 · Answer 9 · 2026-04-13 04:02:21

254

Views

How was the vector magnitude derived?

Published on 13 Apr 2026 - 4:02

score 140 · Answer 10 · 2026-03-26 02:53:08

140

Views

Solving geometry question by vector and pure geometry.

Published on 26 Mar 2026 - 2:53

score 34 · Answer 11 · 2026-03-25 11:00:41

34

Views

How to write the expression for the following vectors? (ratio problem)

Published on 25 Mar 2026 - 11:00

score 67 · Answer 12 · 2026-04-11 20:59:57

67

Views

Sum of dot products of linearly independent vectors

Published on 11 Apr 2026 - 20:59

score 39 · Answer 13 · 2026-04-15 05:35:05

39

Views

To find a smooth planar curve starting at $\vec{r_0}$ stopping at $\vec{r_1}$ with some additional constraints.

Published on 15 Apr 2026 - 5:35

score 760 · Answer 14 · 2026-04-14 20:59:34

760

Views

Why is the vector dot product scaled?

Published on 14 Apr 2026 - 20:59

score 597 · Answer 15 · 2026-04-14 19:15:42

597

Views

Calculate Distance (Not Squared) between two vectors using Inner Product

Published on 14 Apr 2026 - 19:15

List Question

It's given $ABCD$ an isosceles trapezioid with $A(2,6,-3,9),\, B(4,4,7,3),\, C(8,2,7,-1)$, $AB||CD$, find $D$.

Coordinate proof that the sum of a triangle's angles is $180^\circ$?

How to find third coordinate $O(x,y,z)$ on plane $E$ by using two known points, degrees.

Calculus Curve Derivative Lemma

Linear Algebra: How do I prove the following?

How to characterize the angle of a vector with the same angle to each of a set of vectors

Why do sometimes care for where vectors originate from and sometimes not? and exactly how many kinds of vectors are there?

Prove that a function in $\mathbb R^n$ is surjective

How was the vector magnitude derived?

Solving geometry question by vector and pure geometry.

How to write the expression for the following vectors? (ratio problem)

Sum of dot products of linearly independent vectors

To find a smooth planar curve starting at $\vec{r_0}$ stopping at $\vec{r_1}$ with some additional constraints.

Why is the vector dot product scaled?

Calculate Distance (Not Squared) between two vectors using Inner Product

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