WGU D128
WGU D128 MATHEMATICS FOR ELEMENTARY
EDUCATORS OA EXAM 2025
What is the length of the missing leg in a right triangle with a hypotenuse of 25 in. and a
leg of 9 in.? -Correct Answer ✔4√34 in.
A scalene Triangle has -Correct Answer ✔no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying the Pythagorean
theorem. -Correct Answer ✔15.52
A circle has a diameter of 12.8 ft. What is the area of this circle? -Correct Answer
✔128.61 ft.
A circle has a circumference of 12.65 cm. Assuming π = 3.14, what is the measure of this
circle's diameter? -Correct Answer ✔4.03 cm
A directional sign can be best described as which type of polygon? -Correct Answer
✔rectangle
A quadrilateral has four congruent sides and diagonals that are perpendicular. -Correct
Answer ✔Rhombus
Points P (−2, 1), R (−2, −5), and Q (−6, −5) create triangle PQR, which is then translated 1
unit down and 3 units to the right. What is the new x-coordinate of R? -Correct Answer
✔A23
WGU D128
, WGU D128
What is the triangle rotated 90 degrees about the origin? -Correct Answer ✔The triangle
now sits in the upper left corner
Which shows a dilation of the figure below? -Correct Answer ✔Enlargement by scale
factor of one half
Triangle ABC is congruent with triangle DEF. Which of the following angles in DEF is
congruent to m< BCA in the first triangle? -Correct Answer ✔< EFD
A square with vertices A(2, 6) B(4, 8) C(4, 6) and D(2, 4) is dilated by a scale factor of 3
with reference to the origin. Which of the following is the coordinate of B'? -Correct
Answer ✔(12,24)
Given ABCD ~ WXYZ, which of the following is true? -Correct Answer ✔BC~ XY
Which of the following theorems proves that two figures are similar, but not congruent?
-Correct Answer ✔Angle Angle
Which transformation will map (2, 5) onto (-2, 5) -Correct Answer ✔(-x, y)
Two triangles are drawn in the coordinate plane. The vertices of the first triangle are (5,
4), (−4, 6), (−8, 9). The vertices of the second triangle are (1, 6), (−8, 8), ( x, y). Find the
value of x and y that allow these two triangles to be congruent. -Correct Answer ✔(−12,
11)
An octagon in the coordinate plane is transformed.Which of the following
transformations would result in a similar figure? -Correct Answer ✔(-5x, -5y)
WGU D128
WGU D128 MATHEMATICS FOR ELEMENTARY
EDUCATORS OA EXAM 2025
What is the length of the missing leg in a right triangle with a hypotenuse of 25 in. and a
leg of 9 in.? -Correct Answer ✔4√34 in.
A scalene Triangle has -Correct Answer ✔no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying the Pythagorean
theorem. -Correct Answer ✔15.52
A circle has a diameter of 12.8 ft. What is the area of this circle? -Correct Answer
✔128.61 ft.
A circle has a circumference of 12.65 cm. Assuming π = 3.14, what is the measure of this
circle's diameter? -Correct Answer ✔4.03 cm
A directional sign can be best described as which type of polygon? -Correct Answer
✔rectangle
A quadrilateral has four congruent sides and diagonals that are perpendicular. -Correct
Answer ✔Rhombus
Points P (−2, 1), R (−2, −5), and Q (−6, −5) create triangle PQR, which is then translated 1
unit down and 3 units to the right. What is the new x-coordinate of R? -Correct Answer
✔A23
WGU D128
, WGU D128
What is the triangle rotated 90 degrees about the origin? -Correct Answer ✔The triangle
now sits in the upper left corner
Which shows a dilation of the figure below? -Correct Answer ✔Enlargement by scale
factor of one half
Triangle ABC is congruent with triangle DEF. Which of the following angles in DEF is
congruent to m< BCA in the first triangle? -Correct Answer ✔< EFD
A square with vertices A(2, 6) B(4, 8) C(4, 6) and D(2, 4) is dilated by a scale factor of 3
with reference to the origin. Which of the following is the coordinate of B'? -Correct
Answer ✔(12,24)
Given ABCD ~ WXYZ, which of the following is true? -Correct Answer ✔BC~ XY
Which of the following theorems proves that two figures are similar, but not congruent?
-Correct Answer ✔Angle Angle
Which transformation will map (2, 5) onto (-2, 5) -Correct Answer ✔(-x, y)
Two triangles are drawn in the coordinate plane. The vertices of the first triangle are (5,
4), (−4, 6), (−8, 9). The vertices of the second triangle are (1, 6), (−8, 8), ( x, y). Find the
value of x and y that allow these two triangles to be congruent. -Correct Answer ✔(−12,
11)
An octagon in the coordinate plane is transformed.Which of the following
transformations would result in a similar figure? -Correct Answer ✔(-5x, -5y)
WGU D128
