Determine the kind of each triangle according to the given measures. 130 degree, 60 degree, 90 degree
130 degree - obtuse triangle
60 degree - acute triangle
90 degree - right triangle
Triangles can be classified into two: according to angles and according to sides
Triangles According to AnglesRight Triangle
Triangle that has one right angle or angle measures 90°,Acute Triangle
All angles are acute. All angles measure less than 90°,Obtuse Triangle
Triangle has one obtuse angle or one angle measures more than 90°.
Triangles According to SidesEquilateral Triangle
All sides of the triangle are equal.Isosceles Triangle
Two sides of the triangle are congruent.Scalene Triangle
Triangle that has no equal sides.
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Equilateral triangle. The Equilateral triangle shown on the left has three congruent sides and three congruent angles. ...
Isosceles triangle. The Isosceles triangle shown on the left has two equal sides and two equal angles.
Scalene Triangle. The Scalene Triangle has no congruent sides. ...
Acute Triangle. ...
Obtuse Triangle. this is only my copy
Isosceles = two sides or legs are equal in measure.
Scalene = no sides are equal in measure.