Page 160 - Maths Skills - 7

158 Maths

2. In Fig., AB || CD and l is a transversal. 3. In Fig., AB || CD, ∠AEC = 45° and ∠BED = 60°.

∠MND = 65°. Find ∠x. Find the values of x and y.

4. Fill in the blanks.

(i) A line which intersects two or more lines at different points is called a _______.
(ii) The distance between two parallel lines is the _______ everywhere.
(iii) A pair of vertically opposite angles is always _______ in measure.

(iv) If the sum of the measures of two angles is 180°, they are called _______.
(v) A pair of _______ angles always has a common vertex.

(vi) In Fig. 1, p || q. Find: Fig. 1
(a) ∠1 + ∠2 = _______. (b) If ∠3 = 45°, then ∠4 = _______.

5. In Fig. 2, AB || CD. Find the value of x and 6. In Fig. 3, if AB || CD, then find ∠1 and ∠2.
the angles marked as 1, 2, 3 and 4.

Fig. 2 Fig. 3

7. In Fig. 4, the arms of two angles are parallel. 8. In Fig. 5, find the values of x and y.
If ∠ABC = 60°, then find ∠DEF.

Fig. 5
Fig. 4

9. In Fig. 6, AB || CD. Find the measures of x and y.

Fig. 6