Analytical Space Geometry

9000111802

Level: 
B
In the following list identify a line parallel to the plane \(\rho \) such that the distance between the line and the plane equals \(1\). \[ \begin{aligned}[t] \rho \colon x& = 1 + r, & \\y& = 1 + 2s, \\z& = 1 + r + s;\ r,s\in \mathbb{R} \\ \end{aligned} \]
\(\begin{aligned}[t] o\colon x& = t, & \\y & = 2 + 2t, \\z & = -1 + 2t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] p\colon x& = 1 - 2t, & \\y & = -3 - t, \\z & = 2 + 2t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] q\colon x& = 1 - 2t, & \\y & = -3 - t, \\z & = 1 + 2t;\ t\in \mathbb{R} \\ \end{aligned}\)

9000106606

Level: 
A
Determine whether the following two lines are identical, parallel, intersecting or skew. \[ \begin{aligned}[t] p\colon x& = 2t, & \\y & = 3 - t, \\z & = 4 - t;\ t\in \mathbb{R} \\ \end{aligned}\qquad \qquad \begin{aligned}[t] q\colon x& = 2 - 2s, & \\y & = -1 + s, \\z & = 6 + 3s;\ s\in \mathbb{R} \\ \end{aligned} \]
skew lines
parallel lines, not identical
intersecting lines
identical lines

9000106607

Level: 
A
Determine whether the following two lines are identical, parallel, intersecting or skew. \[\begin{aligned} p\colon &x = 2, &q\colon &x =\phantom{ -}1 -\phantom{ 3}s, & & & & \\ &y = 3 -\phantom{ 2}t, & &y =\phantom{ -}2 + 3s, & & & & \\ &z = 3 + 2t;\ t\in \mathbb{R}, & &z = -1 - 2s;\ s\in \mathbb{R} & & & & \end{aligned}\]
skew lines
parallel lines, not identical
intersecting lines
identical lines

9000106608

Level: 
A
Determine whether the following two lines are identical, parallel, intersecting or skew. \[\begin{aligned} p\colon\, &x = 2, &q\colon\, &x =\phantom{ 1} - s, & & & & \\ &y = 2 + t, & &y = 4, & & & & \\ &z = 3;\ t\in \mathbb{R}, & &z = 1 - s;\ s\in \mathbb{R} & & & & \end{aligned}\]
intersecting lines
parallel lines, not identical
skew lines
identical lines

9000106609

Level: 
A
Determine whether two lines are identical, parallel, intersecting or skew. The first line is the line passes through the points \(A = [3;-2;1]\) and \(B = [0;7;7]\) and the second line is the line passes through the points \(C = [5;-8;-3]\) and \(D = [6;-11;-5]\).
identical lines
parallel lines, not identical
intersecting lines
skew lines

9000106301

Level: 
B
Find the line $k$ which is perpendicular to the plane \(\alpha \) \[ \alpha \colon 2x + y - z - 5 = 0 \] and passes through the point \(A = [0;0;1]\).
\(\begin{aligned}[t] x& =\phantom{ 1 -} 2t, & \\y& =\phantom{ 1 -}\ t, \\z& = 1 - t;\ t\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& =\phantom{ -}2 + 2m, & \\y& =\phantom{ -}1 +\phantom{ 2}m, \\z& = -1 -\phantom{ 2}m;\ m\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& =\phantom{ -}2k, & \\y& =\phantom{ -2}k, \\z& = -\phantom{2}k;\ k\in \mathbb{R} \\ \end{aligned}\)
\(\begin{aligned}[t] x& =\phantom{ -}2, & \\y& =\phantom{ -}1, \\z& = -1 + u;\ u\in \mathbb{R} \\ \end{aligned}\)

9000106610

Level: 
A
Determine whether two lines are identical, parallel, intersecting or skew. The first line is the line passes through the points \(A = [1;-4;2]\) and \(B = [3;0;0]\) and the second line is the line passes through the points \(C = [3;-5;5]\) and \(D = [-1;-3;-1]\).
intersecting lines
parallel lines, not identical
identical lines
skew lines

9000106302

Level: 
B
The plane \(\alpha \) has equation \[ \alpha : 2x + y - z - 5 = 0. \] The line \(k\) passes through the point \(A = [0;0;1]\) and is perpendicular to \(\alpha \). Find the intersection \(S\) of the line \(k\) and the plane \(\alpha \).
\(S = [2;1;0]\)
\(S = [2;0;1]\)
\(S = [-2;1;0]\)
\(S = [-2;0;1]\)

9000106305

Level: 
B
Find the area of the triangle \(ABS\). Only first two coordinates of the point $B=[2;0;?]$ are given and $B$ lies in the plane $\alpha$ defined by the equation \[ \alpha \colon 2x + y - z - 5 = 0. \] The point \(S\) is the intersection point of the plane \(\alpha \) and the line \(k\) which is perpendicular to \(\alpha \) and passes through the point \(A = [0;0;1]\).
\(\sqrt{3}\)
\(2\)
\(4\)
\(\sqrt{6}\)