Question

Below is a two-column proof incorrectly proving that the three angles of ΔPQR sum to 180°:
Statements Reasons
Draw line ZY parallel to Construction
m∠ ZRP + m∠ PRQ + m∠ QRY = m∠ ZRYAngle Addition Postulate
∠ ZRP ≅ ∠ RPQ Alternate Interior Angles Theorem
∠ QRY ≅ ∠ PQR Alternate Interior Angles Theorem
m∠ RPQ + m∠ PRQ + m∠ PQR = m∠ ZRY Substitution
m∠ ZRY = 180° Definition of Supplementary Angles
m∠ RPQ + m∠ PRQ + m∠ PQR = 180° Substitution
Which statement will accurately correct the two-column proof? (5 points)

The measure of angle ZRY equals 180° by definition of a straight angle.

Answer 1

Angles QRY and PQR should be proven congruent before the construction of line ZY.
The three angles of ΔPQR equal 180° according to the Transitive Property of Equality.
Line ZY should be drawn parallel to segment QR.

Answer 2

please help!!