AnswersEAP-Algebra Functions and Data Analysis B CRTheoretical and Experimental Probability

Sum of Interior Angles of a Triangle Answers

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Which statement is not true of line p?

A
It stays the same even when the angles in the triangle change.
B
It represents the sum of the three angle measures of the triangle.
C
It combines the three angles from the triangle to form a straight line.
D
It is a straight angle which measures 360°.
5

If the measure of B is 40°, what measures can A and C be? Select the three correct answers.

Question illustration
A
20° and 30°
B
30° and 110°
C
55° and 85°
D
60° and 90°
E
70° and 70°
6

Make a hypothesis about the sum of the interior angles of any triangle. Explain why your hypothesis works for all triangles.

Answer:

I hypothesize that the sum of the interior angles of any triangle is always 180 degrees. This works for all triangles because if you were to tear off the corners and place the vertices together, they would form a straight line, which measures 180 degrees.

7

Sample Response: The sum of the three angles of any triangle will always be 180 degrees because when all three angles are put together, they form a straight line. Which did you include in your response?The sum of all three angles is 180 degrees.The three angles form a straight line.

A
The sum of all three angles is 180 degrees.
B
The three angles form a straight line.

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