WGU D128 2026 EXAM STUDY GUIDE
COMPLETE QUESTIONS WITH ANSWERS
◉A scalene Triangle has . Answer: no congruent sides
◉Find the distance between points (0, 4) and (15, 0) by applying the
Pythagorean theorem. . Answer: 15.52
◉A circle has a diameter of 12.8 ft. What is the area of this circle? .
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? . Answer: 4.03 cm
◉A directional sign can be best described as which type of polygon?
. Answer: rectangle
◉A quadrilateral has four congruent sides and diagonals that are
perpendicular. . 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? . Answer: A23
◉What is the triangle rotated 90 degrees about the origin? . Answer:
The triangle now sits in the upper left corner
◉Which shows a dilation of the figure below? . 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? .
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'? . Answer: (12,24)
◉Given ABCD ~ WXYZ, which of the following is true? . Answer: BC~
XY
◉Which of the following theorems proves that two figures are
similar, but not congruent? . Answer: Angle Angle
COMPLETE QUESTIONS WITH ANSWERS
◉A scalene Triangle has . Answer: no congruent sides
◉Find the distance between points (0, 4) and (15, 0) by applying the
Pythagorean theorem. . Answer: 15.52
◉A circle has a diameter of 12.8 ft. What is the area of this circle? .
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? . Answer: 4.03 cm
◉A directional sign can be best described as which type of polygon?
. Answer: rectangle
◉A quadrilateral has four congruent sides and diagonals that are
perpendicular. . 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? . Answer: A23
◉What is the triangle rotated 90 degrees about the origin? . Answer:
The triangle now sits in the upper left corner
◉Which shows a dilation of the figure below? . 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? .
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'? . Answer: (12,24)
◉Given ABCD ~ WXYZ, which of the following is true? . Answer: BC~
XY
◉Which of the following theorems proves that two figures are
similar, but not congruent? . Answer: Angle Angle
