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

Answer

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

Given below are the links of some of the reference books for class 7 math.

- Mathematics for class 7 by R S Aggarwal
- Mathematics for Class 7 by R D Sharma
- Mathematics Foundation Course For JEE/IMO/Olympiad - Class 7
- IIT Foundation Physics, Chemistry & Maths for Class 7

You can use above books for extra knowledge and practicing different questions.

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Class 7 Maths Class 7 Science