Constructions CBSE Questions & Answers

Two or more circles are concentric if they have same

If two circles touches internally then distance between their centres is equal to

Radius of a circle is ________ to tangent

Two radii of same circle are always :

A quadrilateral can be drawn.If the measures of its

The point in the plane of a triangle which is at equal perpendicular distances from the three sides of the triangle is its

The orthocentere of an obtuse angled triangle lies

With the help of a ruler and compass. It is possible to construct an angle of

With the help of a ruler and compass. It is not possible to construct an angle of

The construction of a triangle ABC in which AB = 2.5 cm, \(\angle A = {45^0}\) is not possible when difference of BC and AC is equal to

The construction of triangle ABC, given that BC = 5 cm, \(\angle B = {45^0}\) is not possible when difference of AB and AC is equal to

The construction of a triangle ABC, given that BC = 4 cm, \(\angle C = {60^0}\) is possible when difference of AB and AC is equal to

To construct a right triangle whose base is 12 cm and sum of its hypotenuse and other side is 18 cm. We draw line segment AB of 12 cm. Draw a ray AX making \({90^0}\) with AB. The next step is:

By following these steps of construction, (i) Draw a line segment PQ = 11 cm (ii) At P construct an angle of \({60^0}\) and at Q, an angle of \({45^0}\), (iii) Bisect these angles. Let the bisectors of these angles intersect at a point A. (iv) Draw perpendicular bisectors DE of AP to intersect PQ at B and FG of AQ to intersect PQ at C. (v). Join AB and AC. Triangle ABC has been obtained. In this \(\)ABC.

In the construction of the bisector of a given angle, as shown in the figure below \(\triangle BEF \cong \triangle BDF\;by\;which\;congruence\;criterion?\)