Geometry - Shape Classification (2D) - Practice

34 Topics, 4 Skills

Parts of a Circle

Topic 1

Identify Whether Lines are Intersecting, Parallel, or Perpendicular

Topic 2

Acute, Obtuse, Right or Straight - First Time

Topic 3

90, 180, or 270 Degrees

Topic 4

Triangle Classification - Both

Topic 5

Classifying Polygons by Sides

Topic 6

Classifying Polygons as Regular or Irregular

Topic 7

Quadrilaterals

Topic 8

Circles - Rule to Find Radius from Diameter - Simple

Topic 9

Circles - Find Radius from Diameter

Topic 10

Is Shape a Parallelogram (from image)

Topic 11

Parts of a Circle - First Time

Topic 12

Identify Lines, Segments, and Rays - First Time

Topic 13

Triangle Classification - Sides - First Time

Topic 14

Acute, Obtuse, Right or Straight

Topic 15

Triangle Classification - Angles - First Time

Topic 16

Polygons - Number of Sides to Name

Topic 17

Classifying Polygons by Sides

Topic 18

Classifying Polygons by Sides and Regular or Irregular

Topic 19

Quadrilaterals Reversed

Topic 20

Circles - Find Diameter from Radius

Topic 21

Shapes - 2D Complex

Topic 22

Is Shape a Parallelogram (from name)

Topic 23

Parts of a Circle - True/False

Topic 24

Identify Lines, Segments, and Rays

Topic 25

Triangle Classification - Sides

Topic 26

Acute, Obtuse, Right or Straight (Reversed)

Topic 27

Triangle Classification - Angles

Topic 28

Polygons - Name to Number of Sides

Topic 29

Classifying Polygons by Sides - Reversed

Topic 30

Quadrilaterals - Is Shape of a Type

Topic 31

Circles - Rule to Find Diameter from Radius - Simple

Topic 32

Circles - Find Diameter from Radius

Topic 33

Shapes Reversed - 2D Complex

Topic 34

Circles - Find Diameter from Radius (Level 2)

Topic 33

This math topic focuses on the skill of calculating the diameter of a circle from a given radius. It involves applying the basic geometric formula where the diameter is twice the radius (D = 2r). This forms part of a broader study on 2D shape classification within geometry. This practice includes multiple problems that provide a radius, and students are required to find the correct diameter, enhancing their understanding of circle properties and calculations related to circle measurements.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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