Skip to content
Home › Geometry Math › Geometry Tests › Equation of a Circle Test – Geometry Math (Printable PDF)

Equation of a Circle Test – Geometry Math (Printable PDF)

Last updated: October 22, 2026 · Written by the Math Made Easy math teachers

Geometry Math Tests – Mathbot, the Math Made Easy robot coach, with free printable tests for Geometry

Looking for an equation of a circle mastery test? Then this Geometry test on Writing and Graphing Circle Equations checks the whole chapter, with points for each question. This test has 8 questions worth 20 points and is designed for 45 minutes. A calculator is allowed. Write circle equations in standard form and justify every classification with a computed number.

Standards: G-GPE.A.1 · Level: Grade 10 Geometry

Time: 45 minutes · 8 questions · Total: 20 points · Calculator: as allowed by your teacher

Question 2 Read the Equation (2 points)

Find the center and radius of (x + 7)² + (y − 3)² = 50. Write the radius in simplest radical form.

Question 3 Circle from a Diameter (3 points)

A circle has a diameter with endpoints (−3, −5) and (9, 1). Write its equation.

Question 4 Complete the Square (3 points)

Rewrite x² + y² + 10x − 6y − 2 = 0 in standard form and give the center and radius.

Question 5 Inside or Outside (3 points)

−7−6−5−4−3−2−112345−4−3−2−112345678xy(−1, 2)ABC
Circle with center (−1, 2) and radius 5.

Write the equation of the circle and classify each labeled point as inside, on or outside. (1 point for the equation, 1 point per two points classified)

Question 6 Radio Station Range (3 points)

On a map with 1 unit = 1 mile, a radio transmitter at (7, −2) broadcasts 9 miles in all directions. (a) Write the equation of the boundary of its range. (1 point) (b) Is a school at (1, 4) in range? (2 points)

Question 7 Tangent to Both Axes (2 points)

A circular logo with radius 9 centimeters sits in the upper-left corner of a grid, touching both the x-axis and the y-axis in the second quadrant. Write the equation of its edge.

Question 8 Read a Graph (2 points)

−7−6−5−4−3−2−11−6−5−4−3−2−112xy
A pond drawn on the grid.

A pond appears on a map grid as shown. Give the equation of its shoreline.

View the Equation Of A Circle test answer key with scoring