Question 3 :
Mark the correct alternative of the following.<br>An angle of measure $$90^o$$ is called?<br>

Question 4 :
Which of the following statement(s) is/are false with respect to quadrilateral?

Question 5 :
The number of triangles with any three of the length 1, 4, 6 and 8 cm, as sides is

Question 6 :
The interior angles of a regular polygon measure $$150^o$$ each. The number of diagonals of the polygon is

Question 8 :
If $$ABCD$$ is quadrilateral, $$E$$ and $$F$$ are the mid-point of $$AC$$ and $$BD$$ respectively $$\therefore HG = ?$$&#160;

Question 9 :
$$p :$$ The corners of a solid shape are called its edges.<br>$$q :$$ The line segments of a solid shape are called its vertices.<br>Which of the following options hold?

Question 11 :
$$(1, 0), (0, 1), (1, 1)$$ are the co-ordinates of vertices of a triangle. The triangle is ............. triangle.

Question 12 :
In $$\Delta ABC$$, if $$AB=AC$$ and $$\angle B=50^{0}$$, then $$\angle A$$&#160;is equal to:<br/>

Question 13 :
An angle which measures more than $$\displaystyle 0^{o}$$&#160;and less than $$\displaystyle 90^{o}$$ is called:

Question 14 :
The perimeters of an equilateral triangle and a square are same The area of triangle : area of square is

Question 15 :
Right triangle $$PQR$$ is to be constructed in the $$xy$$-plane&#160;so that the right angle is at $$P$$ and $$\displaystyle { PR }&#160;$$&#160;is parallel to the $$x-$$axis. The $$x-$$ and $$y-$$coordinates of $$P, Q,$$ and $$R$$ are to&#160;be&#160;integers that satisfy the inequalities $$\displaystyle&#160;-4\le x\le 5$$ and $$\displaystyle&#160;6\le y\le 16$$. How many different triangles with these&#160;properties&#160;could be constructed?&#160;

Question 16 :
Complete the following statement:A rectangle has $$4$$ vertices and $$4$$ sides.<br/>A triangle has $$3$$ vertices and $$3$$ sides.<br/>A circle has________vertices and______sides.

Question 17 :
What is the angle subtended by an edge of a regular tetrahedron at its centre?<br>

Question 18 :
In the following, state if them statement is true $$(T)$$ or false $$(F)$$<br/>A cube has twelve vertices.&#160;