Activity 12&13 Vocabulary-English

Question 1

Flowchart Proof

Answer 1

Way to organize your thoughts into a logical sequence.

Question 2

Triangle Sum Theorem

Answer 2

The sum of the three interior angles in a triangle is ALWAYS 180 degrees.

Question 3

Auxiliary Line

Answer 3

A line added to your figure in a proof to help you complete the proof.

Question 4

Parallel Postulate

Answer 4

If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line.

Question 5

Interior Angle

Answer 5

Formed by two sides of the triangle.

Question 6

Exterior Angle

Answer 6

Formed by one side of the triangle and the extension of an adjacent side.

Question 7

Remote Interior Angle

Answer 7

Interior angle that is not adjacent to a given exterior angle.

Question 8

Remote Exterior Angle

Answer 8

The exterior angles of a triangle is equal to the sum of the two opposite interior angles.

Question 9

Isosceles Triangle

Answer 9

A triangle with two congruent sides.

Question 10

Coincide

Answer 10

Correspond exactly.

Question 11

Isosceles Triangle Theorem

Answer 11

If two sides of a triangle are congruent, then angles opposite those sides are congruent .