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Construction

Draw an angle of 80° with the help of a protractor. Then construct angles of (i) 40° (ii)160° and (iii) 120°.

Construction

Draw a line segment AB of 4 cm in length. Draw a line perpendicular to AB through A and B, respectively. Are these lines parallel?

Land, Soil, Water, Natural vegetation and Wildlife resources

Why is land considered an important resource?

Construction

Draw an angle of 110° with the help of a protractor and bisect it. Measure each angle

Land, Soil, Water, Natural vegetation and Wildlife resources

Write any two reasons for land degradation today.

Construction

Construct a triangle ABC in which BC = 7.5 cm, ∠B = 45° and AB – AC = 4 cm

Construction

Write True or False in each of the questions. Give reasons for your answer:

A triangle ABC can be constructed in which ∠ B = 60°, ∠C = 45° and AB + BC + AC =12 cm.

Construction

Write True or False in each of the questions. Give reasons for your answer:

A triangle ABC can be constructed in which ∠ B = 105°, ∠C = 90° and AB + BC + AC = 10 cm.

Construction

Write True or False in each of the questions. Give reasons for your answer:

A triangle ABC can be constructed in which BC = 6 cm, ∠C = 30° and AC –
AB = 4 cm.

Construction

Write True or False in each of the questions. Give reasons for your answer:

A triangle ABC can be constructed in which AB = 5 cm, ∠A = 45° and BC +AC = 5 cm.