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Measuring angles

This unit focuses on how to measure angles as well as carrying out operations with these angles. It also looks at how these special pairs of angles relate to each other: complementary and supplementar ...

Trigonometrical ratios

As Thales' theorem tells us, trigonometrical ratios of an angle do not depend on the right-angled triangle we choose. Therefore, we can choose a right-angled triangle whose hypotenuse is the radius of ...

Triangles

This first look at triangles during the first two years of secondary education is mainly focused on the following: constructing triangles using a ruler and compass, characteristics of equal triangles, ...

Trigonometry: Solving trigonometric equations

You'll learn to solve certain trigonometric equations.

At the end ot the theorical explanation, you can practice or create 5 exercises to master this subject.

Solving trigonometric equations es un ...

Relative positions between straight lines

You'll learn the different equations of the straight line in the plane, their relative positions, to calculate the angle between two straight lines and distance.

Relative positions between straight ...

Measurement of angles in degrees, minutes and seconds

You'll learn how to measure an angle. For that purpose, you will be given some examples.

At the end of the theorical explanation, you can practice or create 5 exercises to master this subject.

Measu ...

Definition of an angle and noteworthy angles

To learn to identify the different types of angles and basic operations (addition, subtraction and bisector of an angle) you can do between them.

Definition of an angle and noteworthy angles is a didac ...

Posicions relatives entre rectes

Aprendràs les diferents equacions de la recta en el pla, les seves posicions relatives, a calcular l'angle entre dues rectes i la distància.

Posicions relatives entre rectes és ...

Guess the Random Angle . Mide ángulos con un transportador virtual (primaryresources.co.uk)

Use a protractor to measure acute and obtuse angles to the nearest degree.

Con esta sencilla aplicación interactiva podrás medir ángulos con un transportador virtual o, bien, hace ...

Why SSA and AAA Don't Work as Congruence Shortcuts

"Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only side-side-angle (SSA) does not work because the unknown side could be located in two differ ...

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