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Triangle ABC is isosceles. The vertex angle, A, is 20 degrees. What are angles B and C called? What are their measures?
LEARNING TARGET
LEARNING TARGET
I can apply properties of isosceles and equilateral triangles.
I can apply properties of isosceles and equilateral triangles.
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I DO
What do I need to know about equilateral triangles?
These are triangles that have three congruent legs, and three congruent angles.
Let's do some examples:
What are the measures of angles A, B, and ADC in this image?
What is the measure of angle ABC?
What are the measures of m and n?
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WE DO
Let's do a couple of problems from your work. Start on your own when you're ready!
Let's do a couple of problems from your work. Start on your own when you're ready!
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YOU DO
Complete these problems for a 3 (back for a 4!)
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