Question

Solve the following questions in your notebook:
1. In a quadrilateral ABCD, A=70", B = 80° and ZC = 85°. Find the measure of D

2. The angles of a quadrilateral are in the ratio of 4:7:9:16. Find the measure of each angle
. 3. ABCD is a parallelogram in which ZDAB = 70° and ABD = 55°. Calculate ZADC and Z DBC.

4. The measure of one angle of a parallelogram is 85°. Find the measures of the remaining angles.
5. Two adjacent angles of a paralleogram are in the ratio 5: 4. Find the measures of all the angles.
6. The sum of the two opposite angles of a parallelogram is 140°. Find the measures of all the angles of the parallelogram.
7. The ratio of two sides of a parallelogram is 6:5. If its perimeter is 110 cm, find the lengths of the sides of the parallelogram.
8. In a quadrilateral ABCD, ZA= 35°, B = 65° and C= 60°. Find the measure of ZD. Which type of quadrilateral is this?​

Answer 1

Answer:

hey frnds!!

given,

In quadrilateral ABCD

Angel A= 60°

Angel B= 80°

Angel C= 65°

Angel D??

what's angel D??

Step-by-step explanation:

sum of interior angle in a quadrilateral is 360°..

60°+80°+65°+?° = 360°

? = 360°- 205°

angel D= 155°

Angel D is 155°

convex quadrilateral is the quadrilateral in which the opposite angle makes 180 degree..

so,

Angel A + Angel C

and,

Angel B + Angel D

does not make 180 degree..

so, it is not a convex quadrilateral..