Geometry Answers

find the angles that the diagonal of a rectangular parallelepiped 2 in. by 3 in. by 4 in. makes with the faces.

a packing box 2.2 ft by 4.9 ft by 5.5 ft is to be completely covered with tin. how many square feet of the metal are needed? (neglect waste for seams, etc.)

a packing box 2.2 ft by 4.9 ft by 5.5 ft is to be completely covered with tin. how many square feet of the metal are needed? (neglect waste for seams, etc.)

Given PA is tangent to the circle with center O. Prove ∆APB ~ ∆ CPA

If the chords of a circle are 12cm and 6cm and the distance between them is 3cm. Find the radius of the circle

ABCD is a square and triangle EDC is an equilateral triangle . prove that AE=BE and angle DAE=15

Line PQ and line RS intersect at point T. <PTR is congruent to <RTQ. Prove line PQ is perpendicular to line RS.
Write a paragraph proof.

the diameter of circle is 42m , a wide path is built around it 3.5m ......find the total area of circle???

If two non parallel lines are perpendicular to two other straight lines ,each to each.Show that the acute angle between first pair of line is equal to acute angle of second pair of line.

The singular set of a surface-knot diagram is a disjoint union of i) a graph, which has 1- and 6-valent vertices corresponding to branch points and triple points respectively. ii) circles which has no vertices. The graph and circles in a singular set may be linked in R^3. An edge of a singular set will be an edge of this graph or a circle. Around a triple point, there are six edges, such an edge is called b\m-, b\t- or m\t-edge if it is the intersection of bottom and middle, bottom and top or middle and top sheets at the triple point respectively.

My question is: what are the possible connections of edges for any surface diagram, i,e if we have two triple points, how to connect them?

Thank you in advance