Question

Answer all the questions in the attachment explanation needed

Spammers stay away from this question!!​

Answer 1

Answer:

7)

ABCD is a parralelogram

A+∠B=180

[(Sum of adjacent angles of parallelogram are supplementary )

½ ∠A +½∠B=180/2

∠OAB+∠OBA=90

In △AOB

∠OAB+∠AOB+∠OBA=180

∠AOB=180

−(∠OAB+∠OBA)

∠AOB=180

−(∠OAB+∠OBA)

∠AOB=180

−90

∴ ∠AOB=90

9)

Diagonals of a rhombus d1=8cm,d2=15cm

By dividing d1 and d2 in two equal halves we get four right angled triangles.

Now the base of each triangle would be d1/2=8/2=4cm

Perpendicular =d2/2=15/2=7.5cm

Hypotenuse = side of rhombus

Hypotenuse²= perpendicular ²+base²

H²=7.5²+16

H=56.25+16

H=root72.25

H=8.5cm

10)

Adjacent angles of a parallelogram are supplementary.

120+(5x+10)=180

5x+10+120=180

5x=180−130

5x=50

x=10

Also, opposite angles of parallelogram are equal.

6y=120

y=20

hi sister

I hope it will help u

but I don't know the 8th one

Answer 2

Answer:

10. 6y=120

y=20

Step-by-step explanation:

wow u r back

hehe