**GSEB Solutions for Class 7 Mathematics – Construction of Triangle (English Medium)**

GSEB SolutionsMathsScience

**Exercise**

**Solution 1:**

**Solution 2:**

**Solution 3:**

**Solution 4:**

**Solution 5:**

**Solution 6:**

**Solution 7:**

**Activity**

**Solution 1:**

m∠AOB = 60°

m∠BOC = 60°

m∠COD = 60°

m∠DOE = 60°

m∠EOF = 60°

m∠FOA = 60°

**Solution 2:**

**Solution 3:**

The triangle cannot be constructed as the length of BC is greater than the sum of the lengths of AB and AC.

Rule: The sum of measures of any two sides of a triangle is always greater than the measure of its third side.

**Solution 4:**

Now, construct triangles for (2), (3) and (4) as we did in Activity 1 and 2.

**Practice – 1**

**Solution 1:**

**Solution 2:**

**Solution 3:**

**Solution 4:**

**Solution 5:**

**Practice – 2**

**Solution 1:**

**Solution 2:**

**Solution 3:**

**Solution 4:**

To be done by the student according to the measurements of hypotenuse and one of the sides given by his friend.

Follow the steps of construction of right angled triangle shown in the previous sums.