(03.05, 03.06 MC) Look at the figure shown below: Dora is…

(03.05, 03.06 MC) Look at the figure shown below: Dora is writing statements as shown below to prove that if segment ST is parallel to segment RQ, then x = 12:   Statement Reason 1. Segment ST is parallel to segment QR. Given 2. Angle QRT is congruent to angle STP. Corresponding angles formed by parallel lines and their transversal are congruent. 3. Angle SPT is congruent to angle QPR. Reflexive property of angles 4. Triangle SPT is similar to triangle QPR. Angle-Angle Similarity Postulate 5. ? Corresponding sides of similar triangles are in proportion. Which equation can she use as statement 5?

(02.04 MC) ABC is a right triangle. Point D is the midpoint…

(02.04 MC) ABC is a right triangle. Point D is the midpoint of side AB, and point E is the midpoint of side AC. The measure of angle ADE is 47°. The following flowchart with missing statements and reasons proves that the measure of angle ECB is 43°: Which statement and reason can be used to fill in the numbered blank spaces?