Introduction to Proof Answers
Which statement is true about the diagram?
4 lines are shown. One line contains points F, E, A. 3 lines come out of point E. One line goes to point D, another line goes to point B, and another line goes to point C. Angles B E C and B E A are congruent.
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.
If m∠A = m∠B and m∠A + m∠C = m∠D, thenm∠B + m∠C = m∠D.
Which are correct statements regarding proofs? Select three options.
A two-column proof
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.
The last line of a proof represents
Segment AB is congruent to segment AB.
Given that RT ≅ WX, which statement must be true?
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A paragraph proof
If m∠A = m∠B and m∠A + m∠C = m∠D, thenm∠B + m∠C = m∠D.
A horizontal line has points D, B, C. A line extends vertically from point B to point A.
4 lines extend from point E. A horizontal line extends to the left to point A and a vertical line extends up to point C. Another line extends halfway between the other 2 lines to point B. Lines A E and E C form a right angle.
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