Basics of Quadrilaterals

Find the opposite vertices of quadrilateral given below

$P\left(-2,2\right), Q\left(8,2\right), R\left(4,-4\right),S\left(-6,-4\right)$ are the vertices of a quadrilateral. Find the opposite vertices of quadrilateral

$A\left(-2,2\right), B\left(8,2\right), C\left(4,-4\right),D\left(-6,-4\right)$ are the vertices of a quadrilateral. Find the opposite vertices of quadrilateral

In quadrilateral $PQRS$

Name all the pairs of adjacent vertices, sides, and adjacent angles.

In quadrilateral $PQRS$

$P$ and $R$ are adjacent vertices. 

In quadrilateral $ABCD$

Name all the pairs of adjacent vertices, sides, and adjacent angles.

In quadrilateral $PQRS$

Name all the pairs of adjacent vertices

If three angles of a quadrilateral are in the ratio $3:2:1$ and the fourth angle is equal to the sum of these three, then find the value of the smallest angle.

The ratio between the angles of a quadrilateral is $3:4:6:5$. If two-third of the largest angle of the quadrilateral is equal to the smaller angle of a parallelogram. Then find the value of the smallest angle in the parallelogram?

If angles of a quadrilateral are in the ratio $3:5:9:13$, find the largest angle.

Ratio of the angles of a quadrilateral is $3:5:7:9$. Then the measure of all the four angles are 

Find the missing angles in a quadrilateral if three angles are.

$95°, 85°, 60°$

Find the missing angles in a quadrilateral if three angles are.

$85°, 35°, 70°$

Find the missing angles in a quadrilateral if three angles are.

$100°, 95°, 55°$

Find the missing angles in a quadrilateral if three angles are.

$105°, 30°, 70°$

Name all the points which lie in the exterior of quadrilateral $ABCD$.

Name all the points which lie in the interior of quadrilateral $ABCD$.

Name all the points which lies on the quadrilateral $ABCD$.

Identify all pairs of the opposite vertices. How many pairs of opposite vertices?