fill in the blanks:

a) Two ______________ are said to form linear pair of the angels if their non common arms are two opposite rays.

b) if a ray stands on a line then the sum of the adjacent angles so formed is _______________.

c) The sum of all angles around a point is _________________.

d) An angle which is equal to its complement is _____________.

e) Two angles are called a pair of _____________________ if their arms form two pairs of opposite rays.

f) If two lines intersect then the Vertically opposite angles are _____________

g) A line which intersects two or more lines at distinct points is called a ___________________

h) You can draw _____________ transversals on a line.

(i) If two lines are intersected by a transversal such that any pair of corresponding angles are equal then the lines are _________________

Two parallel lines I and m are intersected by a transversal t. If the interior angles on same side of transversal are $(2x- 8)^o$ and $(3x-7)^o$ Find the measure of these angles.

In the given fig. I is parallel to m and p ll q. Find the measure of each of the angles a,b,c,d.

In the given figure below. AB II CD and AD is produced to E so that $ \angle BAE =125^o$ . if $\angle ABC =x^o$ , $\angle BCD =y^o$ and $\angle CDE =z^o$ and $\angle ADC =x^o$ Find the values of x,y and z

In the given below figure rays OA,OB,OC and OD intersect at a point. Find the value of x

True and False statement

a. Sum of two complementary angles is 180°.

b.Sum of two supplementary angles is 180°.

c. Sum of interior angles on the same side of a transversal with two parallel lines is 90°.

d. Vertically opposite angles are equal.

e. A linear pair may have two acute angles

f. Two supplementary angles are always obtuse angles

In below figure , AB||CD, AF||ED, $\angle AFC = 68^o$ and $ \angle FED = 42^o$ Find $\angle EFD$

In below figure, l ||m ||n. ∠ QPS = 35° and ∠ QRT = 55°. Find ∠PQR

1.

a. adjacent angles

b. 180

c. 360

d.45

e. Vertically opposite angles

f. equal

g. transversal

h. 0

i. parallel

2. 70 ,110

3. a=80 ,b=100,c=100,d=100

4. x=65 ,y =125 ,z=125

5. 120

6.

a. false

b. true

c. false

d. true

e. false

f. false

7. 70

8. 90

Class 7 Maths Class 7 Science