In the regular tetrahedron above, all the edges have length 6. E and F are the midpoints of BC and AD respectively. Find the length of EF.

Q: Consider a tetrahedron ABCD whose base is a triangle with vertices A(1,2,−2), B(3,3,−1) and…

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Q: xplain why the order of the vertices is important when naming congruent triangles. Give an example…

A: When two triangles are congruent, they will have exactly the same three sides and exactly the same…

Q: What is the area of the triangle ABC with vertices А(1,2, 3), В(2,4, 3), C(1, 2, 0) ? Select one: O…

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Q: Given the vertices A(-5,-4,8), B(2,3,1), C (4,1, –2), D(6,3,7). of the pyramid. Find the length of…

A: we have been given the vertices A(-5,-4,8), B(2,3,1), C(4,1,-2) and D(6,3,7) of the pyramid. we have…

Q: Three vertices of parallelogram ABCD are A(-5;0), B(0;1) and D(-1;3). Evaluate the length of…

A: Given 3 vertices of the parallelogram are  A-5,0 ; B0,1 and D-1,3  Let the fourth vertex be Cx,y…

Q: Find the perimeter of the polygon with the vertices Q(−3, 2), R(1, 2),  S(1,−2),Q(−3, 2), R(1, 2),…

A: Perimeter of polygon = Sum of length of all sidesLet A(x1, y1) and B(x2, y2) . Then,   Length of…

Q: In the cube shown, which pair of edges would be skew? B D E mi F H A) EH and CD B) AD and FG CDH and…

A: Topic- Skew lines Skew lines: Skew lines are lines that are not parallel and are in different planes…

Q: IfA(-2, – 1),B(a,0),C(4,6) and D(1,2) are the vertices of a parallelogram .ind the values of a and b

A: Given three vertices of a parallelogram are A(-2,-1), B (a,0), C (4,b) and D(1,2). In a…

Q: A rectangle has two vertices on the x-axis, two vertices on the y-axis, and one vertex at the point…

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Q: Find the perimeter of the polygon with the vertices Q(-3, 2), R(1, 2), S(1,-2), and : T(-3,-2). The…

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Q: Find the area of the triangle with vertices P(1,5, -3), Q(0,0,0) and R(4,6, 1). NOTE: Enter the…

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Q: 0, Find a formula for the area of the triangle whose vertices are in R?. V1, and V2

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Q: Where are the coordinates of the third vertex?

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Q: Given the triangle J, with vertices J=(0,0), K=(3,1), and L=(-2,6). FIND the coordinates of its…

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Q: How many vertices does this polyhedron have? Options are: 3, 4, 5, & 6.

A: Vertex of polyhedron is a point at which three or more polyhedron edges of a polyhedron meet.

Q: In the parallelogram ABCD given below, find ZA, ZB, 2C and <D. D 2x

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Q: 2. The coordinates of A, B, C and D are (1, 2, 3), (-1, 4, 4), (2, 1, 5) and (11, a, b)…

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