A tetrahedron is made to place on V.P that is with its axis perpendicular to it and one of the edges of base parallel to H.P and then the tetrahedron is made to rotate w.r.t to V.P up to an acute angle. The top view of previous and later one is __________
Answer
A.a) isosceles triangle, isosceles triangle
B.b) equilateral triangle, isosceles triangle
C.c) equilateral triangle, square
D.d) square, irregular polygon of 4 sides
Answers
Answer:
option B) equilateral triangle, isosceles triangle
Answer:
Concept:
A tetrahedron, commonly known as a triangle pyramid in geometry, is a polyhedron having four triangular faces, six straight edges, and four vertex corners. The tetrahedron is the simplest of all conventional convex polyhedra, and it is also the only one with fewer than five faces. The tetrahedron is a three-dimensional version of the more generic concept of a Euclidean simplex, and so can be referred to as a 3-simplex.The tetrahedron is a polyhedron with a flat polygon base and triangle faces linking the base to a common point, which is one type of pyramid. A tetrahedron is often referred to as a "triangular pyramid" since its base is a triangle (any of the four sides could be considered the base).
Given:
A tetrahedron is positioned on V.P with its axis parallel to it and one of its base edges parallel to H.P, then rotated up to an acute angle with regard to V.P.
Find:
we have to find the answer
Answer:
The answer is (a) isosceles triangle, isosceles triangle
=> When put without inclination, a tetrahedron produces an equilateral triangle for a project to its base and an isosceles triangle for the other view, but here the inclination is given but the given view is top view, therefore the shape will not change but rotate to the given angle.In geometry, an isosceles triangle is a triangle with two sides of equal length. It can be described as having exactly two equal-length sides, or as having at least two equal-length sides, with the latter comprising the equilateral triangle as an example.