Figure abcd is a square. prove bd ≅ ac. statements reasons 1. abcd is a square 1. given 2. ∠dab, ∠abc, ∠bcd, and ∠cda are right angles 2. definition of a square 3. ∠dab ≅ ∠abc ≅ ∠bcd ≅ ∠cda 3. right angles are congruent 4. ab ≅ bc ≅ cd ≅ da 4. ? 5. △bad ≅ △abc 5. sas 6. bd ≅ ac 6. cpctc what is the missing reason in the proof? all sides of a square are congruent all right angles measure 90° definition of diagonal definition of perpendicular

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared