Question

Please do this all please......................

Answer 1

Answer:

1) 40 (angles on opposite and equal sides are equal)

2) 90 (45+45+x=180

90+x=180

x=90)

3) 50 (same reason as of 1)

4) 40 (x+x+100=180

2x=80

x=40)

5) 45 (same as 4)

6) 60 (120+a=180

a=60

a=x. same as 1)

7) 55

8) 30

Answer 2

Answer:

(i) Here since two sides are equal, angles opposite to equal sides are equal

So, x=40•

(ii) Here since two sides are equal, angles opposite to equal sides are equal

So,x+45•+45•=180•

=x=180•-90•

=x=90•

(iii) Again, two sides are equal, angles opposite to equal sides are equal

So, x=50•

(iv) Here, two sides are equal, angles opposite to equal sides are equal

=x+x+100•=180•

=2x=180•-100•

=2x=80•

=x=80/2=40•

(v) Again, two sides are equal, angles opposite to equal sides are equal

So, 90•+x+x=180•

=2x=180•-90•

=2x=90•

=x=90/2=45•

(vi) Again, two sides are equal, angles opposite to equal sides are equal

So, x+x+40•=180•

=2x=180•-40•

=2x=140•

=x=140/2=70•

(vii) Here, exterior sum property of the triangle we have

x+x=120•

=2x=120•

=x=120/2=60•

(viii) Here, exterior sum property of the triangle we have

x+x=110•

=2x=110•

=x=110/2=55•

(ix)Here, two sides are equal, angles opposite to equal sides are equal

And, 30•=x(V.O.A)

so, x=30•

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