Question

Math ......................................

Answer 1

Answer:

3. Equal to 45° (45+45=90)

4. Since a triangle has 3 sides.. equation will be:

s°+s°+s°=180°

3s=180

s=180/3

s=60° Hence proved

5. 80+2x= 180

2x=180-80

x=100/2

x=50°

6. the ratio is 1:2:1

1+2+1=4x

4x=180

x=180/4

x=45

The sides are 1×45 ,2×45 and 1×45.

=45° ,90°and 45°

7. (i) Yes.

(ii) No

(iii)Yes

(iv)No

9. 120° (corresponding angles)

10. 120°(co - interior angles)

(The diagram of Q11 is not visible )

Answer 2

Equal to 45° (45+45=90)

4. Since a triangle has 3 sides.. equation will be:

s°+s°+s°=180°

3s=180

s=180/3

s=60° Hence proved

5. 80+2x= 180

2x=180-80

x=100/2

x=50°

6. the ratio is 1:2:1

1+2+1=4x

4x=180

x=180/4

x=45

The sides are 1×45 ,2×45 and 1×45.

=45° ,90°and 45°

7. (i) Yes.

(ii) No

(iii)Yes

(iv)No

9. 120° (corresponding angles)

10. 120°(co - interior angles)