Learn how to use RoboCompass for Constructions (Playlist)

https://www.youtube.com/playlist?list=PL7_xk_exfNwv01RFRmEf12TAE2i-HMSfC

**CLASS-IX : CONSTRUCTIONS**

To construct Perpendicular bisector of a given line segment

https://www.robocompass.com/share?id=t89nozlizpkl

To construct the bisector of a given angle.

http://www.robocompass.com/share?id=s18ekpl7jcxk

To construct an angle of 60 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1iuvgd69lx645

To construct an angle of 30 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1hrgyidz0ymuv

To construct an angle of 90 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1ib3p3cwxda9h

To construct an angle of 15 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=qe12e42k6gjd

To construct an angle of 45 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1iv6ior995rn5

To construct an angle of 22.5 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=rhlodtzco3tx

To construct an angle of 75 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1jygkd47ezpkk

To construct an angle of 105 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1hbazeud5omk5

To construct an angle of 135 degree at the initial point of a given ray.

http://www.robocompass.com/share?id=1hb86xl18qn36

To construct an equilateral triangle, given its side

http://www.robocompass.com/share?id=veynofye0yep

To construct a triangle ABC in which BC = 7cm, ∠B = 75° and AB + AC = 13 cm.

http://www.robocompass.com/share?id=1jew25g4srsj7

To construct a triangle ABC in which BC = 8cm, ∠B = 45° and AB – AC = 3.5 cm.

http://www.robocompass.com/share?id=1iv9vimugcz05

To construct a triangle PQR in which QR = 6cm, ∠Q = 60° and PR – PQ = 2cm.

http://www.robocompass.com/share?id=1jed7a80z4h29

To construct a triangle XYZ in which ∠Y = 30°, ∠Z = 90° and XY + YZ + ZX = 11 cm.

http://www.robocompass.com/share?id=vb6d4hpnrn07

To construct a right triangle whose base is 12cm and sum of its hypotenuse and other side is 18 cm.

http://www.robocompass.com/share?id=t4a1cnw350l0

**CLASS-X : CONSTRUCTIONS**

Draw a line segment of length 7.6 cm and divide it in the ratio 5 : 8. Measure the two parts

http://www.robocompass.com/share?id=1iuw08wrxskmc

Construct a triangle of sides 4 cm, 5 cm and 6 cm and then a triangle similar to it, whose sides are 2/3 of the corresponding sides of the first triangle.

http://www.robocompass.com/share?id=1jew2589i8xgl

Construct a triangle of sides 5 cm, 6 cm and 7 cm and then a triangle similar to it, whose sides are 7/5 of the corresponding sides of the first triangle.

http://www.robocompass.com/share?id=soccsk097ghf

Construct an isosceles triangle whose base is 8 cm and altitude 4 cm and then another triangle whose sides are 3/2 times the sides of the isosceles triangle.

http://www.robocompass.com/share?id=qe4dndqrnvhw

Draw a triangle ABC with side BC = 6 cm, AB = 5 cm and ∠ ABC = 60°. Then construct a triangle whose sides are 3/4 of the corresponding sides of the triangle ABC.

http://www.robocompass.com/share?id=s4ulktiz5ely

Draw a triangle ABC with side BC = 7 cm, ∠ B = 45°, ∠ A = 105°. Then, construct a triangle whose sides are 4/3 times the corresponding sides of Δ ABC.

http://www.robocompass.com/share?id=1jxzf36oavqk4

Draw a right triangle in which the sides (other than hypotenuse) are of lengths 4 cm and 3 cm. Then construct another triangle whose sides are 5/3 times the corresponding sides of the given triangle.

http://www.robocompass.com/share?id=1hruuxtj8dxrn

Draw a circle of radius 6 cm. From a point 10 cm away from its centre, construct the pair of tangents to the circle and measure their lengths.

http://www.robocompass.com/share?id=vf1fukfh8x15

Construct a tangent to a circle of radius 4 cm from a point on the concentric circle of radius 6 cm and measure its length. Also verify the measurement by actual calculation.

http://www.robocompass.com/share?id=sonfw2xqdg6v

Draw a circle of radius 3 cm. Take two points P and Q on one of its extended diameter each at a distance of 7 cm from its centre. Draw tangents to the circle from these two points P and Q.

http://www.robocompass.com/share?id=1h84ss561ag6c

Draw a pair of tangents to a circle of radius 5 cm which are inclined to each other at an angle of 60°.

http://www.robocompass.com/share?id=1iv3t9dz3fh44

Draw a line segment AB of length 8 cm. Taking A as centre, draw a circle of radius 4 cm and taking B as centre, draw another circle of radius 3 cm. Construct tangents to each circle from the centre of the other circle.

http://www.robocompass.com/share?id=1h7zs09kqrcqh

Let ABC be a right triangle in which AB = 6 cm, BC = 8 cm and ∠ B = 90°. BD is the perpendicular from B on AC. The circle through B, C, D is drawn. Construct the tangents from A to this circle.

http://www.robocompass.com/share?id=u8b84fsm7q75

Draw a circle with the help of a bangle. Take a point outside the circle. Construct the pair of tangents from this point to the circle.

http://www.robocompass.com/share?id=ubp69wk1u721