A triangle in which all the sides and angles are equal - equilateral triangle, A triangle in which the base angles are equal - isosceles triangle, A triangle in which all sides are unequal - scalene triangle, A triangle which has all angles less than 90 degree - acute-angled triangle, A triangle which has one angle more than 90 degree - obtuse-angled triangle, A triangle which has one angles equal to 90 degree - right-angled triangle, A figure which has two endpoints and a definite length - segment, A figure which has one endpoints and no definite length - ray, A figure which has no endpoints and indefinite length - line, A fugure which has two sides and a vertex - angle,

Geometry triangle

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