Proving Quadrilaterals Coordinate

Sarah proved that this is a square. The slopes of -2/5 and 5/2 made her able to do this. How come?

• Because those slopes form parallel lines.

• Because those slopes form perpendicular lines, creating right angles.

• Because those slopes make the sides congruent.

How would you prove the opposite sides of a parallelogram are parallel?

• Slope

• Distance Formula

• Midpoint

How would you prove a quadrilateral is a rectangle using slope?

• Prove opposite sides are parallel

• Prove diagonals are congruent

• Prove opposite sides are congruent

• Prove there's 4 right angles

What is the most specific name for quadrilateral DOGS?

• Rhombus

• Rectangle

• Parallelogram

• Square

What is the most specific name for quadrilateral ARMY?

• Parallelogram

• Square

• Rectangle

• Rhombus

You can prove both pairs of opposite sides are parallel by using the slope formula.

• True

• False

If you are using the distance formula to prove a parallelogram in the coordinate plane, how many times do you have to do it?

• 1

• 2

• 3

• 4

If you want to prove a parallelogram in the coordinate plane using the both the slope formula and distance formula, how many times do you need to do each?

• 1

• 2

• 3

• 4

If I have a parallelogram labeled ABCD and I am going to prove it using the slope formula, what sides need to be congruent?

If I have a parallelogram labeled ABCD and I am going to prove it using the distance formula, what sides need to be congruent?