Question

Q.3: In a quadrilateral ABCD, 2D is equal to 150° and ZA = ZB= 2C. Find 2A, 2B and C.
Q.4: The angles of a quadrilateral are in the ratio of 1:2:3:4. What is the measure of the four
angles?
Q.5 In a parallelogram angle A =80 degree. Find other angles.
Q. 6. In a quadrilateral angle P,Q,R are equal to 50 degree, 50 degree and 60 degree. Find the
measure of angle S.
Q.7. Three angles of a quadrilateral are equal. Fourth angle is 120 degree. Find other three
angles.
Q.8. An angle of a parallelogram measures 70°. Find the measure of the remaining three angles.
Q.9. The perimeter of a parallelogram is 150 cm. One of its side is greater than the other by 25
cm. Find length of all sides of the parallelogram.
Q.10 Lengths of adjacent sides of a parallelogram is 3 cm and 4 cm. Find its perimeter.​

Answer 1

Answer:

Q-5

Step-by-step explanation:

B=100,C=80,D=100

Answer 2

Answer:

Answer to Q4 is 36°, 72°, 108° and 144°

Step-by-step explanation:

Let the common ratio be $x$

Therefore angles are, $x, 2x, 3x, 4x$

Angle sum of a quadrilateral is 360°

Therefore, $x+2x+3x+4x=360$

=> $10x = 360$

=> $x = 36$

Therefore, angles are 36°, 72°, 108° and 144°