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☆Define the terms.☆
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(i) Equailateral Triangle:- In geometry, an equilateral triangle is a triangle in which all three sides have the same length. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°.
(ii) Isosceles Triangle :- An isosceles triangle is a triangle with (at least) two equal sides. In the figure above, the two equal sides have length and the remaining side has length. . This property is equivalent to two angles of the triangle being equal. An isosceles triangle therefore has both two equal sides and two equal angles.
(iii) Scalene Triangle :- All angles of a scalene triangle are unequal. A scalene triangle has no line of symmetry. The angle opposite to the longest side would be the greatest angle and vice versa.
(iv) Acute angled Triangle :- An acute triangle is a triangle with three acute angles. An obtuse triangle is a triangle with one obtuse angle and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle.!
Refer attachment too :D
Fig 1 shows images of equilateral triangle
fig 2 shows images of Isosceles Triangle
fig 3 shows images of Scalene Triangle
fig 4 '' " " Acute angled Triangle
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