Construct a triangle ABC in which BC = 4 cm, ∠ACB = 45°.

Using ruler and compasses only, construct a triangle ABC in which BC = 4 cm, ∠ACB = 45° and the perpendicular from A on BC is 2.5 cm. Draw the circumcircle of triangle ABC and measure its radius.

Solution:

More Solutions:

• The length of the tangent to a circle is 24 cm and the distance of Q.
• If the angle between two radii of a circle is 130°.
• If tangents PA and PB from an exterior point P to a circle.
• At one end A of a diameter AB of a circle of radius 5 cm.
• AB is a chord of the circle such that ∠ACB = 50°.
• PA and PB are tangents to a circle with centre O.