Question

Date :
120
PRACTICAL - 05
Aim : Using circular geoboard on which nails are suitably fixed to Verity. 1)
ircular geoboard on which nails are suitably fixed to Verify.i) Tangent secant theorem of ang
ii) Incribed angle theorem
Materials : Circular geoboard on which nails are suitably fixed, protractor, rubber bands.
Procedure :
1) Tangent secant theorem of angles.
1) On a circular geoboard using rubber bands make three different angles between tangent and so
2) Using protractor measure the angles and note your observations in observation table.
3) Measure its intercepted arc by measurement on a circular geoboard (0° to 360°)
4) From the observation table note your conclusion.
Figure Angle between tangent and secant Measure of intercepted are
No. (Using protractor)
measurement on geoboard]​

Answer 1

The angle formed by two secants intersecting outside a circle is half the difference between the intercepted arc measures.

Explanation:

Define Tangent secant theorem of angles.

• Intersecting Secant Angles Theorem is defined as
• The angle formed by two secants intersecting outside a circle is half the difference between the intercepted arc measures.
• The angle made where they intersect each other at a common point.
• The angle made by the intercepted arc CD.
• The angle made by the intercepted arc AB.