WGU D128 MATHEMATICS FOR
ELEMENTARY EDUCATORS OA Exam
2025 Questions and Answers
What is the length of the missing leg in a right triangle with a hypotenuse of 25 in. and a leg of 9
in.? - ANS 4√34 in.
A scalene Triangle has - ANS no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying the Pythagorean theorem. -
ANS 15.52
A circle has a diameter of 12.8 ft. What is the area of this circle? - ANS 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? - ANS 4.03 cm
A directional sign can be best described as which type of polygon? - ANS rectangle
A quadrilateral has four congruent sides and diagonals that are perpendicular. -
ANS 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? - ANS A23
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, What is the triangle rotated 90 degrees about the origin? - ANS The triangle now sits in the
upper left corner
Which shows a dilation of the figure below? - ANS 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? - ANS < 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'? - ANS (12,24)
Given ABCD ~ WXYZ, which of the following is true? - ANS BC~ XY
Which of the following theorems proves that two figures are similar, but not congruent? -
ANS Angle Angle
Which transformation will map (2, 5) onto (-2, 5) - ANS (-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. - ANS (−12, 11)
An octagon in the coordinate plane is transformed.Which of the following transformations
would result in a similar figure? - ANS (-5x, -5y)
Which type of transformation are these figures an example of? - ANS Dilation
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
ELEMENTARY EDUCATORS OA Exam
2025 Questions and Answers
What is the length of the missing leg in a right triangle with a hypotenuse of 25 in. and a leg of 9
in.? - ANS 4√34 in.
A scalene Triangle has - ANS no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying the Pythagorean theorem. -
ANS 15.52
A circle has a diameter of 12.8 ft. What is the area of this circle? - ANS 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? - ANS 4.03 cm
A directional sign can be best described as which type of polygon? - ANS rectangle
A quadrilateral has four congruent sides and diagonals that are perpendicular. -
ANS 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? - ANS A23
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, What is the triangle rotated 90 degrees about the origin? - ANS The triangle now sits in the
upper left corner
Which shows a dilation of the figure below? - ANS 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? - ANS < 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'? - ANS (12,24)
Given ABCD ~ WXYZ, which of the following is true? - ANS BC~ XY
Which of the following theorems proves that two figures are similar, but not congruent? -
ANS Angle Angle
Which transformation will map (2, 5) onto (-2, 5) - ANS (-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. - ANS (−12, 11)
An octagon in the coordinate plane is transformed.Which of the following transformations
would result in a similar figure? - ANS (-5x, -5y)
Which type of transformation are these figures an example of? - ANS Dilation
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
