Lesson 01: Relationships of Angles | Unit 7: Angles, Triangles, and Prisms

Draw

Draw a right angle. How do you know it's a right angle? What is its measure in degrees?

Draw

Draw a straight angle. How do you know it’s a straight angle? What is its measure in degrees?

Open Ended

An equilateral triangle’s angles each have a measure of 60 degrees. Can you put copies of an equilateral triangle together to form a straight angle? Explain or show your reasoning.

Open Ended

An equilateral triangle’s angles each have a measure of 60 degrees. Can you put copies of an equilateral triangle together to form a right angle? Explain or show your reasoning.

Open Ended

Here are two different patterns made out of the same five identical isosceles triangles. Without using a protractor, determine the measures of Angles $$x$$ and $$y$$ . Explain or show your reasoning.

Multiple Choice

How many right angles need to be put together to make 360 degrees?

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Multiple Choice

How many right angles need to be put together to make 180 degrees?

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Multiple Choice

How many right angles need to be put together to make 270 degrees?

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Multiple Choice

How many right angles need to be put together to make a straight angle?

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Open Ended

Here are two patterns made using identical rhombuses. Without using a protractor, determine the value of $$a$$ . Explain or show your reasoning.