In Greek this just means: Working with Triangles Trigonometry-2 In Greek this just means: Working with Triangles

Trigonometry Hypotenuse, Opposite and Adjacent sides of right angled triangles. Practise

Q P R Naming Triangle Sides In trigonometry we work with right angled triangles. To label a triangle we start by naming the corners or vertices. Write any capital letter at each corner. P R Mostly we label the corners A, B and C.

Q P R The Hypotenuse The hypotenuse is the longest side of a triangle. It is always opposite the right angle. Hypotenuse P R In this example we are working with angle P.

Opposite Side Q To find the side opposite the angle you are working with, put your finger on the angle. P R Now move your finger through the triangle. The side you get to is the opposite side.

Opposite Side Q To find the side opposite the angle you are working with, put your finger on the angle. P R Now move your finger through the triangle. The side you get to is the opposite side.

Adjacent Side Q The adjacent side starts from the point you are working with and goes to the right angle. Opposite P R

Adjacent Side Q The adjacent side starts from the point you are working with and goes to the right angle. P R

Adjacent Side Q Now you know how to find the hypotenuse, opposite and adjacent sides of a right angled triangle. Hypotenuse Opposite P R Adjacent Remember: It always depends on the angle you are working with.

N M O Label the Sides You are working with angle M. Which side is the hypotenuse? M MN O MO NO

Label the Sides N Hypotenuse M MN O MO Well Done! NO

N M O Label the Sides You are working with angle M. Which side is the opposite side? M MN O MO NO

Label the Sides N Opposite M MN O MO Well Done! NO

N M O Label the Sides You are working with angle M. Which side is the adjacent side? M MN O MO NO

Label the Sides N Hypotenuse Opposite M MN O Adjacent MO Well Done! NO

N M O Label the Sides You are working with angle N. Which side is the hypotenuse? M MN O MO NO

Label the Sides N Hypotenuse M MN O MO Well Done! NO

N M O Label the Sides You are working with angle N. Which side is the opposite side? M MN O MO NO

Label the Sides N M MN O Opposite MO Well Done! NO

N M O Label the Sides You are working with angle N. Which side is the adjacent side? M MN O MO NO

Label the Sides N Hypotenuse Adjacent M MN O Opposite MO Well Done! NO

A C B Label the Sides You are working with angle B. Which side is the hypotenuse? A C AC AB BC B

A C B Label the Sides You are working with angle A. Which side is the adjacent side? A C AC AB BC B

A C B Label the Sides You are working with angle B. Which side is the opposite side? A C AC AB BC B

A C B Label the Sides You are working with angle B. Which side is the adjacent side? A C AC AB BC B

A C B Label the Sides You are working with angle A. Which side is the opposite side? A C AC AB BC B

Label the Sides N Now you know how to label the sides of a right angled triangle. Hypotenuse Adjacent M MN O Opposite MO NO

Well Done!

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