Question

Q3 : Fill in the blanks.

1. The perimeter of an equilateral triangle is __________ times the length of its each

side.

2. If (7x+4) = 25, then the value of x is __________.

3. 87/7 is equal to the mixed fraction __________.

4. The number of right angles in a complete angle is __________.

5. A polygon having __________ sides is called quadrilateral.​

Answer 1

Answer:

1. Three

2. 3

3. 12 3 /7

4. Four

5. Four

Answer 2

Answer:

1. thrice

2. x = 3

3.  12 3/7

4.

5. 4

Step-by-step explanation:

1. Since each side is equal, If we add them or multiply by 3 the answer will be same. Eg. 2 cm

Perimeter = 2+2+2

                = 6 = 2*3

2. 7x + 4 = 25

7x = 21 (25-4)

x = 21/7 = 3

3. Direct division

4. Since adding two right angles would make the sum 180 degrees and  you can't connect the angles in a way so that the number of sides is > 2 and < 4

5. no explanation