Opposite angles in a parallelogram are equal

Q.

The three angles of a quadrilateral are ${75}^{\circ }$, ${90}^{\circ }$ and ${75}^{\circ }$. What is the fouth angle?

1. ${150}^{\circ }$
2. ${75}^{\circ }$
3. ${120}^{\circ }$
4. ${90}^{\circ }$

Q.

If ABCD is a parallelogram, then which of the following is true?

1. AC=BD

2. AB=AC

3. $\angle A={130}^{\circ },\angle C={130}^{\circ },\angle B={50}^{\circ }$

4. $AB\perp AD$

Q. In the figure, ABCD is a parallelogram in which $\angle ADC={105}^{\circ }$. The value of $\angle CBE$ is ______.

1. ${105}^{\circ }$
2. ${75}^{\circ }$
3. ${55}^{\circ }$
4. ${90}^{\circ }$

Q.

If opposite angles of a parallelogram are supplementary, then the parallelogram is _____ .

1. Trapezium
2. Rectangle
3. Rhombus
4. None of the above