Explanation

Explanation

Brittle. adjective. a brittle substance or object is hard and can easily break into pieces.

Explanation

Braille is a system that uses combinations of raised dots to spell letters and numbers.

Louis Braille was a French educator and the inventor of a reading and writing system

Braille was blinded at the age of three in one eye

Born: 4 January 1809 Coupvray, France

Died: 6 January 1852 (aged 43) Paris, France

Resting place: Panthéon, Paris Coupvray

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ND4-12-2022

Explanation

One kilometer is equal to 1000 meters.

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The term “kilo-” in “kilometer” is a prefix in the metric system that means “thousand.”

So, when we say “kilometer,” it means a 1000 meters. 

Explanation

The Idiom "get your got" means To irritate someone.

For example I'm sorry. I didn't mean to get your goat.

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Explanation

Explanation

Explanation

A polygon with 8 sides has 8 vertices. To form a triangle, you need to choose 3 vertices out of these 8. This can be done in:

8C3 = 8! / (3! x (8-3)!)

= 8! / (3! x 5!)

= (8 x 7 x 6) / (3 x 2 x 1)

= 56

So, 56 triangles can be formed by joining the angular points of a polygon with 8 sides.

Explanation

The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours.

So, in a day, the hands point in the opposite directions 22 times.

Explanation

The ratio of the length of the rod to its shadow is 1:√3.

This ratio is equal to the tangent of the angle of elevation of the sun (tan(θ) = opposite/adjacent).

So, we can set up the equation: tan(θ) = 1/√3

To find the angle θ, we take the inverse tangent (arctangent) of both sides: θ = arctan(1/√3)

Using a calculator or trigonometric tables, we find that θ = 30°