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EleoNora [17]
3 years ago
5

In circle O, diameter AB has been drawn. Locate point C anywhere between A and B (on either side of the diameter). Draw in AC an

d BC . What type of triangle is ACB ? Explain.

Mathematics
1 answer:
-Dominant- [34]3 years ago
8 0

Answer:

Right Triangle.

Step-by-step explanation:

Given AB is a diameter of a circle O.  

Point C is located on the circle's circumference as shown in the attached diagram.

\angle AOB=180^\circ

Theorem: The angle at the centre is twice the angle at the circumference.

The angle formed at centre O by arc AB is \angle AOB

The angle formed at the circumference at point C by arc AB is \angle ACB

By the theorem above:

\angle AOB=2*\angle ACB\\180^\circ=2*\angle ACB\\\angle ACB=90^\circ

Therefore, Triangle ACB is a Right Triangle with the right angle at C.

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