Proving Triangle Similarity with Algebraic Proof
Interactive Video
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Mathematics
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1st - 6th Grade
•
Practice Problem
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Easy
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the vertical angle theorem state about vertical angles?
They are always supplementary.
They are always congruent.
They are always equal to 90 degrees.
They are always complementary.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the double-angle postulate, when are two triangles similar?
When they have two equal perimeters.
When they have two congruent angles.
When they have two congruent sides.
When they have two equal areas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the flowchart proof for triangle similarity?
Establish that the triangles have equal perimeters.
Show that angles A and D are right angles.
Prove that all angles are equal.
Demonstrate that the triangles have equal areas.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do we know that angle ACB is equal to angle DCE in the proof?
Because they are right angles.
Because they are complementary angles.
Because they are supplementary angles.
Because they are vertical angles.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step in proving that triangle ABC is similar to triangle DEC?
Using the vertical angle theorem.
Using the double-angle similarity postulate.
Using the congruence of all sides.
Using the equality of all angles.
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