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### MEAP Preparation - Grade 7 Mathematics4.16 Classifying Triangles by Sides

#### Classification based on sides

Triangles can be divided into three kinds according to the measures of their sides.
1. Equilateral triangle:
• A triangle whose sides are equal is called an equilateral triangle.
• All the angles of an equilateral triangle are equal.
2. Isosceles triangle:
• A triangle in which two sides are equal is called an isosceles triangle.
• In an isosceles triangle the unequal side is called the base of the triangle.
• The base angles of an isosceles triangle are congruent.
3. Scalene triangle:
• If no two sides of a triangle are equal, it is called a scalene triangle.

Directions: Read the above properties of triangles and answer the following questions:
1. Illustrate each of the above properties by drawing a triangle.
2. Write in your own words, the different classification of triangles based on sides.

 Q 1: "A scalene triangle has its two sides equal in length".FalseTrue Q 2: "In an equilateral triangle all the sides are _________". Answer: Q 3: If the angles of a triangle in degree measure are 60, 120/2 and 180/3, then it is a (an) _________ triangle.Answer: Q 4: In a triangle, the sides are given as 6cm, 6cm and 4cm. Which of the following best describes this triangle.Scalene triangleEquilateral TriangleIsosceles Triangle Question 5: This question is available to subscribers only! Question 6: This question is available to subscribers only!

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