Chapters

## Exercise 1

Determine the height, h, of the drawing below:

## Exercise 2

Calculate the distance from point A to point B.

## Exercise 3

Calculate the distance between the points A and B.

## Exercise 4

Calculate the radius of the circle circumscribed in a triangle, where A = 45 °, B = 72 ° and a = 20m.

## Exercise 5

The radius of a circle measures 25 m. Calculate the angle between the tangents to the circle, drawn at the ends of a chord with a length of 36 m.

## Exercise 6

The diagonals of parallelogram ABCD measure 10 cm (AC) and 12 cm (BD), and the angle that they form in the centre is 48° 15'. Calculate the length of the sides AD and AB.

## Solution of exercise 1

Determine the height, h, of the drawing below:

## Solution of exercise 2

Calculate the distance from point A to point B.

## Solution of exercise 3

Calculate the distance between the points A and B.

## Solution of exercise 4

Calculate the radius of the circle circumscribed in a triangle, where A = 45 °, B = 72 ° and a = 20m.

## Solution of exercise 5

The radius of a circle measures 25 m. Calculate the angle between the tangents to the circle, drawn at the ends of a chord with a length of 36 m.

In the quadrilateral AOBT, the angles A and B are right angles.

## Solution of exercise 6

The diagonals of parallelogram ABCD measure 10 cm (AC) and 12 cm (BD), and the angle that they form in the centre is 48° 15'. Calculate the length of the sides AD and AB.

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