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Q: and all the three angles are unequal
  • A. Equilateral triangle
  • B. Scalence triangle
  • C. Isosceles triangle
  • D. Right angled triangle
Correct Answer: Option B - Scalence triangle:-A Scalence triangle is one whose three sides are all unequal and angle also are all unequal. Isosceles triangle :- An isosceles triangle has only two sides equal the equal at the base are also equal. Equilateral triangle :- It is one whose three sides are equal and the three angles are also equal, and as the angles of every triangle are together equal to right angle the angles in an equilateral triangle are 60° each.
B. Scalence triangle:-A Scalence triangle is one whose three sides are all unequal and angle also are all unequal. Isosceles triangle :- An isosceles triangle has only two sides equal the equal at the base are also equal. Equilateral triangle :- It is one whose three sides are equal and the three angles are also equal, and as the angles of every triangle are together equal to right angle the angles in an equilateral triangle are 60° each.

Explanations:

Scalence triangle:-A Scalence triangle is one whose three sides are all unequal and angle also are all unequal. Isosceles triangle :- An isosceles triangle has only two sides equal the equal at the base are also equal. Equilateral triangle :- It is one whose three sides are equal and the three angles are also equal, and as the angles of every triangle are together equal to right angle the angles in an equilateral triangle are 60° each.