circles

From a point P outside a circle exactly _________ tangents can be drawn to the circle 

• 2
• 1
• 3
• Many 

Say 'TRUE' or 'FALSE'
The angle between two tangents to a circle may be 0°

• TRUE
• FALSE

How many common tangents can be drawn to two concentric circles?

• 1
• 2
• 3
• 0

• 60°
• 70°
• 80°
• 90°

A point P is 10 cm from the center of the circle.  The length of the tangent drawn from P to the circle is 8 cm.  The radius of the circle is equal to____

• 4 cm 
• 5 cm 
• 6 cm 
• None of these 

• 50°
• 60°
• 70°
• 80°

Say 'TRUE' or 'FALSE'
The perpendicular at the point of contact of a tangent to a circle passes through the center of the circle 

• TRUE
• FALSE

Choose the Correct Answer:
The tangents drawn at the end points of a diameter of a circle are ____

• Perpendicular
• Parallel

What is true about chords?

• Their end points are on the circle
• They go though the circle
• They touch the circle at one point
• They always go through the center point

Using lines tangent to the circle, find the value of x.

• 57

• 137

• 47

• 257