Angles in a Triangle

Learning Intention

WALT calcualte the value of unkown angles within triangles.

1

Do Now
The angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Here is video reminder, in case you need it.

Work Period

Complete the questions below. You do not need to write the word degrees or put the symbol after each answer. Just write the correct number.

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Calculate the value of angle x

1

Review Lesson 3: Angles in a Triangle

Angles in a Triangle

Do Now
The angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Review Lesson 3: Angles in a Triangle

Angles in a Triangle

Do Now
The angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Closing
James says that a triangle is right angled.
Olivia says that the same triangle is isosceles.
They are both correct. Explain how.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Closing
James says that a triangle is right angled.
Olivia says that the same triangle is isosceles.
They are both correct. Explain how.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Review Lesson 3: Angles in a Triangle

Angles in a Triangle

Do NowThe angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Review Lesson 3: Angles in a Triangle

Angles in a Triangle

Do NowThe angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

ClosingJames says that a triangle is right angled.Olivia says that the same triangle is isosceles.They are both correct. Explain how.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

ClosingJames says that a triangle is right angled.Olivia says that the same triangle is isosceles.They are both correct. Explain how.

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Calculate the value of angle x

Do Now
The angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Do Now
The angles in a triangle add up to ______ degrees. A triangle with two sides of equal length is called an isosceles triangle.

Closing
James says that a triangle is right angled.
Olivia says that the same triangle is isosceles.
They are both correct. Explain how.

Closing
James says that a triangle is right angled.
Olivia says that the same triangle is isosceles.
They are both correct. Explain how.