In the above figure, which one of the following is not true ($c\parallel d,a\parallel b$)?

(a) $\angle 1+\angle 5={180}^{\circ }$
(b) $\angle 2+\angle 5={180}^{\circ }$
(c) $\angle 3+\angle 4={180}^{\circ }$
(d) $\angle 2+\angle 3={180}^{\circ }$

Q.
In the above figure, if AB $\parallel$ CD, then which of the following is true?

Q.

In$△$NVY, NV = VY $\ne$ YN. Which of the following is true?

Q.

In the adjoining figure, ABCD is a cyclic quadrilateral. Then r + s is equal to

Q.

Match the equivalent fractions and write two more for each:

$\begin{array}{c}\left(i\right)\frac{250}{400}\left(a\right)\frac{2}{3}\\ \left(ii\right)\frac{180}{200}\left(b\right)\frac{2}{5}\\ \left(iii\right)\frac{660}{990}\left(c\right)\frac{1}{2}\\ \left(iv\right)\frac{180}{360}\left(d\right)\frac{5}{8}\\ \left(v\right)\frac{220}{550}\left(e\right)\frac{9}{10}\end{array}$

Q. In the given figure, if l₁ || l₂, what is x + y in terms of w and z?

(a) 180 − w + z

(b) 180 + w − z

(c) 180 − w − z

(d) 180 + w + z