6th Class Mathematics Understanding Elementary Shapes

  • question_answer 33)
    Match the following:
    Measures of Triangle Types of Triangle
    (i) 3 sides of equal length (a) Scalene
    (ii) 2 sides of equal length (b) Isosceles right angled
    (iii) All sides are of different length (c) Obtuse angled
    (iv) 3 acute angles (d) Right angled
    (v) 1 right angle (e) Equilateral
    (vi) 1 obtuse angle (f) Acute angled
    (vii) 1 right angle with two sides of equal length (g) Isosceles

    Answer:

    We know that, A triangle having three equal sides is called an equilateral triangle. A triangle having two equal sides is called an isosceles triangle. A triangle having all sides unequal is called a scalene triangle In a triangle, if each angle is acute angle then triangle is, called an acute angled triangle. If a triangle has a right angle, then it is called a right angled triangle. If a triangle has an obtuse angle, then it is an obtuse angled triangle. If a triangle has a right angle and two equal sides is called an isosceles right angled triangle. So, required matching is shown as below :

    (i) 3 sides of equal length (e) Equilateral
    (ii) 2 sides of equal length (g) Isosceles
    (iii) All sides are of different length (a) Scalene
    (iv) 3 acute angles (f) Acute angled
    (v) 1 right angle (d) Right angled
    (vi) 1 obtuse angle (c) Obtuse angled
    (vii) 1 right angle with two sides of equal length (b) Isosceles right angled


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