This math topic focuses on understanding the relationship between the diameter and the radius of circles. It features a series of problems where the primary task is to determine properties of the radius given the diameter of various circles. Each question presents different hypothetical circle diagrams with labeled points, posing queries about how the radius and diameter are related, such as whether the radius is half, twice, or unrelated to the measure of the diameter. The problems are structured as multiple-choice questions, enhancing students' ability to analyze and apply geometric rules regarding circle dimensions.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Circles - Rule to Find Radius from Diameter
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
What is known about radius XR given diameter YXP
Circles - Rule to Find Radius from Diameter Worksheet
| Math worksheet on 'Circles - Rule to Find Radius from Diameter (Level 2)'. Part of a broader unit on 'Geometry - Intermediate - Intro' Learn online: app.mobius.academy/math/units/geometry_intermediate_intro/ |
| What is known about radius PD given diameter YPN |
| Nothing, PD and YPN are not related |
| PD is twice YPN |
| PD is half of YPN |
| PD and YPN add to 180 |
| PD and YPN add to 90 |
| PD is the same as YPN |
| What is known about radius YZ given diameter BYD |
| YZ is twice BYD |
| YZ is half of BYD |
| YZ is the same as BYD |
| YZ and BYD add to 180 |
| Nothing, YZ and BYD are not related |
| YZ and BYD add to 90 |
| What is known about radius DZ given diameter YDR |
| DZ and YDR add to 90 |
| DZ is half of YDR |
| DZ is the same as YDR |
| Nothing, DZ and YDR are not related |
| DZ is twice YDR |
| DZ and YDR add to 360 |
| What is known about radius PN given diameter XPM |
| Nothing, PN and XPM are not related |
| PN and XPM add to 90 |
| PN is half of XPM |
| PN and XPM add to 360 |
| PN and XPM add to 180 |
| PN is the same as XPM |
| What is known about radius BZ given diameter XBN |
| BZ is the same as XBN |
| Nothing, BZ and XBN are not related |
| BZ is half of XBN |
| BZ and XBN add to 90 |
| BZ is twice XBN |
| BZ and XBN add to 180 |
| What is known about radius YM given diameter PYX |
| YM and PYX add to 90 |
| YM and PYX add to 180 |
| YM and PYX add to 360 |
| YM is half of PYX |
| Nothing, YM and PYX are not related |
| YM is twice PYX |
| What is known about radius BR given diameter DBP |
| BR and DBP add to 180 |
| BR is twice DBP |
| BR and DBP add to 90 |
| Nothing, BR and DBP are not related |
| BR is the same as DBP |
| BR is half of DBP |