NCERT Mathematics Class 9 Exemplar Ch 5 Introduction to Euclid's Geometry Part 2
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8. Boundaries of surfaces are:
(A) Surfaces
(B) Curves
(C) Lines
(D) Points
Answer: B
9. In Indus Valley Civilization (about 3000 B.C.), the bricks used for construction work were having dimensions in the ratio
(A)
(B)
(C)
(D)
Answer: B
10. A pyramid is a solid figure, the base of which is
(A) Only a triangle
(B) Only a square
(C) Only a rectangle
(D) Any polygon
Answer: D
11. The side faces of a pyramid are:
(A) Triangles
(B) Squares
(C) Polygons
(D) Trapeziums
Answer: A
12. It is known that if then . The Euclid’s axiom that illustrates this statement is:
(A) First Axiom
(B) Second Axiom
(C) Third Axiom
(D) Fourth Axiom
Answer: B
13. In ancient India, the shapes of altars used for house hold rituals were:
(A) Squares and circles
(B) Triangles and rectangles
(C) Trapeziums and pyramids
(D) Rectangles and squares
Answer: A
14. The number of interwoven isosceles triangles in Sriyantra (in the Atharvaveda) is:
(A) Seven
(B) Eight
(C) Nine
(D) Eleven
Answer: C