WGU D128 Mathematics for Elementary Educators ACTUAL exam:
D128 Mathematics for Elementary Educators
QUESTION AND ANSWERS UPDATED 2025 LATEST
Study online at https://quizlet.com/_8k0nyx
1. What is the length of the missing leg in a right triangle 434 in.
with a hypotenuse of 25 in. and a leg of 9 in.?
2. A scalene Triangle has no congruent sides
3. Find the distance between points (0, 4) and (15, 0) by 15.52
applying the Pythagorean theorem.
4. A circle has a diameter of 12.8 ft. What is the area of 128.61 ft.
this circle?
5. A circle has a circumference of 12.65 cm. Assuming π 4.03 cm
= 3.14, what is the measure of this circle's diameter?
6. A directional sign can be best described as which type rectangle
of polygon?
7. A quadrilateral has four congruent sides and diagonals Rhombus
that are perpendicular.
8. Points P (−2, 1), R (−2, −5), and Q (−6, −5) create triangle A23
PQR, which is then translated 1 unit down and 3 units
to the right. What is the new x-coordinate of R?
9. What is the triangle rotated 90 degrees about the ori- The triangle now sits in the
gin? upper left corner
10. Which shows a dilation of the figure below? Enlargement by scale fac-
tor of one half
11. Triangle ABC is congruent with triangle DEF. Which of < EFD
the following angles in DEF is congruent to m< BCA in
the first triangle?
1/7
, D128 Mathematics for Elementary Educators
Study online at https://quizlet.com/_8k0nyx
12. A square with vertices A(2, 6) B(4, 8) C(4, 6) and D(2, 4) (12,24)
is dilated by a scale factor of 3 with reference to the
origin. Which of the following is the coordinate of B'?
13. Given ABCD ~ WXYZ, which of the following is true? BC~ XY
14. Which of the following theorems proves that two fig- Angle Angle
ures are similar, but not congruent?
15. Which transformation will map (2, 5) onto (-2, 5) (-x, y)
16. Two triangles are drawn in the coordinate plane. The (−12, 11)
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.
17. An octagon in the coordinate plane is trans- (-5x, -5y)
formed.Which of the following transformations would
result in a similar figure?
18. Which type of transformation are these figures an ex- Dilation
ample of?
19. A circle has an area of approximately 615.75 in 2. What 87.96 inches
is the circumference of the circle?
20. What is the area of this figure? 63 square units
21. A triangular window has an area of 600 in 2. The base 60 in.
of the window is three times its height. What is the
length of the base of the window?
22. 122 yd
2/7
D128 Mathematics for Elementary Educators
QUESTION AND ANSWERS UPDATED 2025 LATEST
Study online at https://quizlet.com/_8k0nyx
1. What is the length of the missing leg in a right triangle 434 in.
with a hypotenuse of 25 in. and a leg of 9 in.?
2. A scalene Triangle has no congruent sides
3. Find the distance between points (0, 4) and (15, 0) by 15.52
applying the Pythagorean theorem.
4. A circle has a diameter of 12.8 ft. What is the area of 128.61 ft.
this circle?
5. A circle has a circumference of 12.65 cm. Assuming π 4.03 cm
= 3.14, what is the measure of this circle's diameter?
6. A directional sign can be best described as which type rectangle
of polygon?
7. A quadrilateral has four congruent sides and diagonals Rhombus
that are perpendicular.
8. Points P (−2, 1), R (−2, −5), and Q (−6, −5) create triangle A23
PQR, which is then translated 1 unit down and 3 units
to the right. What is the new x-coordinate of R?
9. What is the triangle rotated 90 degrees about the ori- The triangle now sits in the
gin? upper left corner
10. Which shows a dilation of the figure below? Enlargement by scale fac-
tor of one half
11. Triangle ABC is congruent with triangle DEF. Which of < EFD
the following angles in DEF is congruent to m< BCA in
the first triangle?
1/7
, D128 Mathematics for Elementary Educators
Study online at https://quizlet.com/_8k0nyx
12. A square with vertices A(2, 6) B(4, 8) C(4, 6) and D(2, 4) (12,24)
is dilated by a scale factor of 3 with reference to the
origin. Which of the following is the coordinate of B'?
13. Given ABCD ~ WXYZ, which of the following is true? BC~ XY
14. Which of the following theorems proves that two fig- Angle Angle
ures are similar, but not congruent?
15. Which transformation will map (2, 5) onto (-2, 5) (-x, y)
16. Two triangles are drawn in the coordinate plane. The (−12, 11)
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.
17. An octagon in the coordinate plane is trans- (-5x, -5y)
formed.Which of the following transformations would
result in a similar figure?
18. Which type of transformation are these figures an ex- Dilation
ample of?
19. A circle has an area of approximately 615.75 in 2. What 87.96 inches
is the circumference of the circle?
20. What is the area of this figure? 63 square units
21. A triangular window has an area of 600 in 2. The base 60 in.
of the window is three times its height. What is the
length of the base of the window?
22. 122 yd
2/7
