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Mariulka [41]
3 years ago
13

The perpendicular bisectors of two sides of a triangle meet at point that belongs to the third side. Prove that this is a right

triangle.
Mathematics
1 answer:
devlian [24]3 years ago
3 0
<h3>Step-by-step explanation:</h3>

The point of intersection of the perpendicular bisectors of a triangle is the circumcenter, the center of the circle that contains the three triangle vertices.

If that center is on one side, that side must be a diameter of the circle. The diameter cuts the circle into two arcs, each of which measures 180°.

The third vertex of the triangle and its two legs form an inscribed angle that subtends an arc of 180°. The measure of that angle is half the measure of the arc, so the angle measures 90° and is a <em>right angle</em>.

A triangle with a right angle is a right triangle. QED

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B is the right answer.

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