Question

PRACTICE SHEET
I. Match the following:
1. Jadeite
A burial site
2. Mehrgarh
A pit house
3. Bhrzahom
Group of farmers and herders
4. Tribe
A stone
5. Hallur
Present Andhra Pradesh​

Answer 1

Answer:

A parallelogram, being a quadrilateral has four interior angles. The neighbouring angles here are consecutive angles. A diagonal splits a vertex angle into the two; those are the adjacent angles.

Two consecutive angles are supplements; one acute, the other obtuse.

By data, they are in the ratio of 4:5 = 4x:5x.

So, 4x+5x = 180°

9x = 180°

x = 20°

4x = 80° and 5x = 100°

Hence, the consecutive angles in the parallelogram are 80° and 100°....

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