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What types of triangles are these? They are not the same.
LEARNING TARGET
LEARNING TARGET
I can apply properties of isosceles triangles.
I can apply properties of isosceles triangles.
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What do I need to know about isosceles triangles?
These are triangles that have two congruent legs, and two congruent base angles.
Legs: the two congruent sides
Base: the other side
Base angles: the two angles formed by the base and each leg
Vertex: the angle formed by the two legs
Let's do an example:
Is AB congruent to CB? Explain.
Is angle A congruent to angle DEA? Explain.
Let's look at one more theorem:
And, another example:
What is the value of x?
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