Quiz about GM-U9.2 LC: Proving Polygons in the Coordinate Plane

Question 1

Which of the following must be true for the triangle to be isosceles?

Accepted Answer

AC = BC

Answer

C = B

Answer

A = C

Answer

AB = BA

Question 2

Which of the following must be true for the triangle to be equilateral?

Accepted Answer

AC = BC

Accepted Answer

$$\angle A\cong\angle B$$

Accepted Answer

$$\angle B\cong\angle C$$

Accepted Answer

AB = BC

Question 3

Which of the following must be true for polygon ABCD to be a parallelogram?

Accepted Answer

$$AD\parallel BC$$

Accepted Answer

$$AB\parallel DC$$

Accepted Answer

$$\angle A\cong\angle C$$

Accepted Answer

$$\angle B\cong\angle D$$

Answer

$$A=121\ units^2$$

Question 4

Which of the following must be true for polygon ABCD to be a trapezoid?

Accepted Answer

$$AD\parallel BC$$

Answer

$$AB\parallel DC$$

Answer

$$\angle A\cong\angle C$$

Answer

$$\angle B\cong\angle D$$

Question 5

Which of the following must be true for polygon ABCD to be a isosceles trapezoid?

Accepted Answer

$$AD\parallel BC$$

Accepted Answer

$$AB\cong DC$$

Answer

$$\angle A\cong\angle C$$

Answer

$$\angle B\cong\angle D$$

Question 6

Which of the following must be found to prove the perimeter of the triangle?

Accepted Answer

$$DE$$

Accepted Answer

$$FD$$

Accepted Answer

$$FE$$

Answer

$$\angle D$$

Question 7

Which of the following must be formulas should be used to find the length of DE?

Accepted Answer

$$d=\sqrt[]{\left(x-x\right)^2+\left(y-y\right)^2}$$

Answer

$$M=\left(\frac{\left(x+x\right)}{2},\frac{\left(y+y\right)}{2}\right)$$

Answer

$$A=\frac{1}{2}ab\sin C$$

Answer

$$\pi r^2$$

Question 8

Which of the following must be formulas should be used to find the midpoint of DE?

Accepted Answer

$$M=\left(\frac{\left(x+x\right)}{2},\frac{\left(y+y\right)}{2}\right)$$

Answer

$$d=\sqrt[]{\left(x-x\right)^2+\left(y-y\right)^2}$$

Answer

$$A=\frac{1}{2}ab\sin C$$

Answer

$$\pi r^2$$

GM-U9.2 LC: Proving Polygons in the Coordinate Plane