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It is the shape formed by three non-collinear points on the surface of a sphere which are joined together by straight lines in which two of the sides are of the same length.
An example might be a triangle from the earth's North pole to two points on the same latitude - specially the equator.
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ProfessorOn the surface of a sphere, find any three points which are not on a great circle. The shape formed by joining the three pairs of points using arcs of great circles is a spherical triangle. The triangle is isosceles if two of the arcs are of the same length [and the third is not].
A great circle, in this context, is a circle on the surface of the earth and whose centre is at the centre of the earth.
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Isosceles spherical triangle?
Yes, they do exist.
What triangle has one right angle and can be an isosceles?
A triangle that has one right angle and is isosceles is called an isosceles right triangle.
What is a triangle with sides 11cm 15cm 11cm?
Isosceles
Does an isosceles triangle have a 90 degree angle?
An isosceles triangle can have a 90 degree angle, but doesn't necessarily. Similarly, a right triangle can be an isosceles triangle, but isn't necessarily.
How many pairs of perpendicular lines does an isosceles triangle have?
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
