In Figure, name the (i) face parallel to `B F G C` (ii) faces adjacent to `B F G C` (iii) three edges which meet in the vertex `Gdot`

In Figure, If the face E F G H is taken as the base, then name the lateral faces. Also, name the line segment representing the height of the cuboid.

Use the given figure to express : (i) a in terms of b and f, (ii) e in terms of f and g, (iii) d in terms of a and e, (iv) c in terms of e and g.

The adjoining figure represents a cuboid. (i) How many edges does the cuboid have? (ii) Name two edges of the cuboid which are parallel to AD . (iii) Name two edges of the cuboid which are perpendicular to AD.

Take three non-collinear point A ,\ B and C on a page of your notebook. Join A B ,\ B C and C A , what figure do you get? Name the triangle. Also, name The side opposite to /_B The angle opposite to side \ A B The vertex opposite to side B C The side opposite to vertex Bdot

In Figure, A B C D E is a pentagon. A line through B parallel to A C meets D C produced at F . Show that: (i) a r( triangle A C B)=a r(triangle A C F) (ii) a r( quadrilateral A E D F)=a r(A B C D E)

Fill in the blanks to make the following statements true: (i) A cuboid has .......... vertices. (ii) A cuboid has .......... edges (iii) A cuboid has .......... faces. (iv) The number of lateral faces of a cuboid is ......... (v) A cuboid all of whose edges are equal is called a ......... (vi) Two adjacent faces of a cuboid meet in a line segment called its ......... (vii) Each edge of a cuboid can be obtained as a line segment in which two ......... meet. (viii) ......... edges of a cube (or cuboid) meet at each of its vertices. (ix) A ......... is a cuboid in which all the six faces are squares. (x) The three concurrent edges of a cuboid meet at a point called the ......... of the cuboid.

E , F , G , H are respectively, the mid-points of the sides A B ,B C ,C D and D A of parallelogram A B C D . Show that the quadrilateral E F G H is a parallelogram and that its area is half the area of the parallelogram, A B C Ddot GIVEN : A quadrilateral A B C D in which L ,F ,G ,H are respectively the mid-points of the sides A B ,B C ,C D and D Adot TO PROVE : (i) Quadrilateral E F G H is a parallelogram a r(||^(gm)E F G H)=1/2a r(||^(gm)A B C D) CONSTRUCTION : Join A C and H F

The dimensions of a cuboid with vertices A ,\ B ,\ C ,\ D ,\ E ,\ F ,\ G\ a n d\ H are as shown in Figure. Which edges are of length 4cm? Which edges are of length 5cm? Which faces have area equal to 20\ c m^2? Which faces have the largest area? What is this largest area?

E , F , G , H are respectively, the mid-points of the sides of parallelogram A B C D . Show that the area of EFGH is half the area of the parallelogram, A B C Ddot GIVEN : A quadrilateral A B C D in which L ,F ,G ,H are respectively the mid-points of the sides A B ,B C ,C D and D Adot TO PROVE : a r(^(gm)E F G H)=1/2a r(^(gm)A B C D) CONSTRUCTION : Join H and F

Consider a cube ABCGHIJK of sides a placed in a uniform magnetic field B acting perpendicular to the face BHIC as shown in figure. (i) What is the flux through face ABCG? (ii) What is the flux through face GCIJ? (iii) What is the flux through face AKJG? (iv) What is the flux through face BHIC?