Introduction to Proof

Question 1

Which statement is true about the diagram?

Revolt · Accepted Answer

K is the midpoint of AB.

Question 2

4 lines extend from point B. A line extends straight up from B to point A. Another line extends up and to the right to point C. Another line extends slight up and to the right to point D. The other line extends slightly down and to the right to point E.

Revolt · Accepted Answer

∠ABD ≅ ∠CBE

Question 3

A paragraph proof

Revolt · Accepted Answer

contains a set of sentences explaining the steps needed to reach a conclusion.

Question 4

Which statement is true about the given information?

Revolt · Accepted Answer

BD ≅ CE

Question 5

Segment AB is congruent to segment AB.

Revolt · Accepted Answer

reflexive

Question 6

If m∠A = m∠B and m∠A + m∠C = m∠D, thenm∠B + m∠C = m∠D.

Revolt · Accepted Answer

substitution property

Question 7

A horizontal line has points D, B, C. A line extends vertically from point B to point A.

Revolt · Accepted Answer

m∠ABD = m∠ABC

Question 8

A flow chart has 4 boxes. The top box is labeled given and contains angle A is-congruent-to angle B, angle C is congruent to angle B. The second box is labeled symmetric property and contains angle B is-congruent-to angle C. The third box is labeled question mark and contains angle A is congruent to angle C. The fourth box is labeled definition of congruent to angle x and contains m angle A = m angle C.

Revolt · Accepted Answer

transitive property

Introduction to Proof Answers

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