Construction of Tangents to a Circle

IMPORTANT

Construction of Tangents to a Circle: Overview

This Topic covers sub-topics such as Construction of Tangent to a Circle from the Given Point of Contact, Construction of Common Tangents and, Construction of a Circle of Given Radius Touching a Given Circle and a Given Line

Important Questions on Construction of Tangents to a Circle

MEDIUM
IMPORTANT

Draw a circle of radius 4 cm which touches a given line AB and a given circle of radius 3 cm with centre C.

MEDIUM
IMPORTANT

Draw a circle of radius 3 cm which touches a given line AB and a given circle of radius 2 cm with centre C.

MEDIUM
IMPORTANT

Construct an angle of 65° and draw a circle of radius 2.5 cm  touching the arms of the angle.

MEDIUM
IMPORTANT

Which of the following diagram is correct for construction of an angle of 70° and  a circle of radius 2.5 cm  touching the arms of the angle.

EASY
IMPORTANT

To construct a circle Touching a Line AB at Given PointT  and Passing through a Given Point P the following steps has to be followed

Step 1: Draw a straight line AB

Step 2: Mark point T any where on the line AB and choose random point P

Step 3: Draw a perpendicular line TQ  to the line AB at the point P

Step 4: Join TP

Step 5: Draw a bisection line to the line TP and extend till it intersect TQ at O

Step 6: Use compass to draw a circle at centre O and passing through P and touches the line AB

 

 

 

 

EASY
IMPORTANT

Construction of a Circle Touching a Line AB at Given PointT  and Passing through a Given Point P

Step 1: Draw a straight line AB

Step 2: Mark point T any where on the line AB and choose random point P

Step 3: Draw a perpendicular line TQ  to the line AB at the point P

Step 4: Join TP

Step 5: Draw a bisection line to the line TP and extend till it intersect TQ at O

Step 6: Use compass to draw a circle at centre O and passing through P and touches the line AB

Which step is incorrect?

 

 

 

EASY
IMPORTANT

In a step of construction of inscribed triangle, It is necessary to construct all three perpendicular bisectors

EASY
IMPORTANT

In a step of construction of inscribed triangle, It is not necessary to construct all three perpendicular bisectors

MEDIUM
IMPORTANT

The dimension of the rectangle is 4×16.

What would be the length of a square, if you want to construct a square whose its area equal to the rectangle?

MEDIUM
IMPORTANT

The dimension of the rectangle is 2×32.

What would be the length of a square, if you want to construct a square whose its area equal to the rectangle?

EASY
IMPORTANT

Draw a transverse common tangent to two circles of radii 6cm and 2cm whose centres are 8cm apart.

MEDIUM
IMPORTANT

Construct a transverse common tangent to two circles of radii 4cm and 3cm whose centres are 10cm apart.

MEDIUM
IMPORTANT

Construct two circles of radii 4 cm and 2.5 cm and the distance between their centres is 9 cm. Construct a direct common tangent of the circles.

MEDIUM
IMPORTANT

Draw a line segment MN of length 8.5 cm. Draw two circles of radii 4 cm and 2.5 cm with M and N as centre respectively. Construct a pair of tangents to each circle from the centre of the other circle.

EASY
IMPORTANT

Question Image

Triangle ABC is right-angled at A, and AD is the altitude from A to the hypotenuse BC.
Find x.

EASY
IMPORTANT

Draw a tangent to a circle at a point on the circle. 

MEDIUM
IMPORTANT

Construct two circles of radii 5 cm and 3 cm and the distance between their centres is 8.5 cm. Construct a direct common tangent of the circles.

MEDIUM
IMPORTANT

Draw a line segment PQ of length 7 cm. Draw two circles of radii 2 cm and 3 cm with P and Q as centre respectively. Construct a pair of tangents to each circle from the centre of the other circle.

HARD
IMPORTANT

Draw a circle of diameter 7 cm. Take two points A and B on either side of the extended diameter, each at a distance of 5 cm respectively from the centre. Draw tangents to the circle from the points A and B. Write steps of construction.

HARD
IMPORTANT

Construct a tangent to a circle of radius 6 cm from a point P on the concentric circle of radius 10 cm and measure its length. Also verify the measurement by actual calculation.