Suppose the circle meets QR at A, RP at B and PQ at C.
PQ = PR (given)
so PC + CQ = PB + BR.
But PC and PB are tangents to the circle from point P, so PC = PB.
Therefore CQ = BR
Now CQ and AQ are tangents to the circle from point Q, so CQ = AQ
and BR and AR are tangents to the circle from point R, so BR = AR
Therefore AQ = AR, that is, A is the midpoint of QR.
Are isosceles triangle sometimes an equilateral triangle
No.
isosceles triangle
Yes. One can satisfy oneself that this is true just by considering the symmetry of the construction.
Yes.
a circumscribed triangle is a circumscribed triangle and will always be
No more unusual than the right isosceles triangle, which is a diagonally-bisected square.
A triangle has exactly one circumscribed circle.
Yes. The bisector of one angle of a triangle is the perpendicular bisector of theopposite side if the bisected angle is the vertex angle of an isosceles triangle,or any angle of an equilateral triangle.
An acute triangle can be an isosceles triangle, but it doesn't have to be. An isosceles triangle can be an acute triangle, but it doesn't have to be.
Only if the vertex angle being bisected is between the sides of equal length will the result be two congruent triangles.
A right triangle and an isosceles triangle have the fact that they are both triangles in common. A right triangle can also be an isosceles triangle.
An isosceles triangle is a triangle that has two equal sides.
Are isosceles triangle sometimes an equilateral triangle
To circumscribed a circle about a triangle you use the angle. This is to get the right measurements.
No.
isosceles triangle