Advertisements
Advertisements
Question
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 form the centre of the other circle.
Solution
Steps of Construction
Step 1: Draw a line segment AB = 8 cm.
Step 2: With A as center and radius 4 cm, draw a circle.
Step 3: With B as center and radius 3 cm, draw another circle.
Step 4: Draw the perpendicular bisector XY of AB, cuffing AB at C.
Step 5: With C as center and radius AC (or BC), draw a circle intersecting the circle with
center A at P and P’: and the circle with center B at Q and Q’.
Step 6: Join BP and BP’ Also, join AQ and AQ’.
Here. AQ and AQ’ are the tangents from A to the circle with center B. Also, BP and BP’ are the tangents from B to the circle with center A.
APPEARS IN
RELATED QUESTIONS
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.
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 circles. Give the justification of the construction.
In the figure given below, diameter AB and chord CD of a circle meet at P. PT is a tangent to the circle at T. CD = 7.8 cm, PD = 5 cm, PB = 4 cm. Find:
1) AB.
2) the length of tangent PT.
Draw a circle of diameter 9 cm. Mark a point at a distance of 7.5 cm from the centre of the circle. Draw tangents to the given circle from this exterior point. Measure the length of each tangent.
Using ruler and compasses only, draw an equilateral triangle of side 4.5 cm and draw its circumscribed circle. Measure the radius of the circle.
Draw an inscribing circle of a regular hexagon of side 5.8 cm.
Draw a circle of radius of 3 cm. Take two points P and Q on one of its diameters extended on both sides, each at a distance of 7 cm on opposite sides of its centre. Draw tangents to the circle from these two points P and Q ?
Draw a circle with centre O and radius 3 cm. Take a point P outside the circle. Draw tangents to the circle from P without using the centre and using only ruler and compasses.
Draw two concentric circles with radii 4 cm and 6 cm. Taking a point on the outer circle, construct a pair of tangents to inner circle. By measuring the lengths of both the tangents, show that they are equal to each other.
Using ruler and compass construct a triangle ABC in which AB = 6 cm, ∠BAC = 120° and AC = 5 cm. Construct a circle passing through A, B and C. Measure and write down the radius of the circle.