Question

Do as directed.
1. The measure of three angles of a quadrilateral is 30°, 70° and 100°. Find out (1)
the measurement of fourth angle.
2. The measurement of one side of an equilateral quadrilateral is 10 cm. What is (1)
the perimeter of the quadrilateral?
3. The perimeter of a square is 100 cm. What will be the measurement of each (1)
of its side?
4. Parallelogram 'BEST' is given below. Find the measurement of angle x and (2)
angle y





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Answer 1

fourth angle is 160 degree

because 30+ 70+100=200

360-200=160 degree

2 first side=10cm

equilateral =10×4=40cm

3 100÷4 =25cm

4 x=90

y=90

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Answer 2

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