Ohio OST Geometry case studies
Ohio OST Geometry · Put your knowledge to work in context.
Ohio's State Tests include an end-of-course geometry test that is part of the state testing program described by the Ohio Department of Education and Workforce. According to the department's testing page, students in the classes of 2023 and beyond take end-of-course tests in English language arts II, algebra I, geometry (or integrated mathematics I and II), biology, American history, and American government. The Ohio OST Geometry case studies are 5 cases and about 2,861 words.
1SSA Data and a Flawed SAS Claim
During a proof review in an OST Geometry class, two students present competing arguments about triangles ABC and DEF. They are given AB = DE = 7 cm, BC = EF = 5 cm, and angle A = angle D = 35 degrees.
636 words, about 3 min2Scale Drawing and a Parallel Path
A landscape architect’s scale drawing shows a triangular courtyard ABC with AB = 6 cm, AC = 8 cm, and BC = 10 cm. The drawing uses a scale of 1 cm : 150 cm.
570 words, about 3 min3Tangent-Secant Data and a Radius Assumption
A circular fountain has a tangent walkway PT and a straight sight line from point P that crosses the fountain edge at A and again at B. A groundskeeper measures PT = 12 m, PA = 8 m, and AB = 10 m, with P, A, and B collinear in that order.
599 words, about 3 min4Silo Paint Order and Volume Check
A city parks department is designing a cylindrical storage silo with a hemispherical roof. The cylindrical wall has radius 6 ft and height 14 ft, and the hemispherical roof sits exactly on top.
500 words, about 3 min5Classifying a Coordinate Quadrilateral
A surveyor places stakes at A(1, 2), B(5, 4), C(6, 8), and D(2, 6) to mark a proposed rectangular plaza. A draftsperson claims the plaza is a rectangle because AB and CD appear equal and parallel, and BC and DA also appear equal and parallel.
556 words, about 3 min