Question

1. The measure of three angles of a quadrilateral is 30 , 70 and 100". Find out
the measurement of fourth angle.
2. The measurement of one side of an equilateral quadrilateral is 10 cm. What is
the perimeter of the quadrilateral?
3. The perimeter of a square is 100 cm. What will be the measurement of each
of its side?
4. Parallelogram 'BEST' is given below. Find the measurement of angles and
angle y.
B
E
X
TA
S​

Answer 1

Answer:

1. 160

2. 40 cm

3. 25 cm

Answer 2

Answer:

1. 160  2. 40cm   3. 25cm   4. !parallelogram cannot be seen!

Step-by-step explanation:

1. Sum of angles of quadrilateral = 360

Fourth angle = 360 - 30 - 70 - 100 = 160 degrees

2.All sides are equal in length in equilateral quadrilateral

So all sides measure 10cm, 10 *4 = 40cm

3. All sides are equal in length in a square

So all sides measure 100/4

=25cm