Geometry - Shape Classification (2D) - Practice

38 Topics, 4 Skills

2D Shape Congruent or Similar - Image Pair to Property

Topic 1

2D Shape Congruent or Similar - Image Pair and Property to Yes/No

Topic 2

Circles - Rule to Find Diameter from Radius - Simple

Topic 3

2D Shape Congruent or Similar - Property to Image Pair

Topic 4

Circles - Rule to Find Radius from Diameter - Simple

Topic 5

2D Shape Congruent or Similar - Image and Property to Image

Topic 6

Circles - Find Diameter from Radius

Topic 7

Circles - Find Diameter from Radius

Topic 8

Circles - Find Radius from Diameter

Topic 9

Shapes - 2D Complex

Topic 10

Shapes Reversed - 2D Complex

Topic 11

Is Shape a Parallelogram (from image)

Topic 12

Is Shape a Parallelogram (from name)

Topic 13

Parts of a Circle

Topic 14

Identify Whether Lines are Intersecting, Parallel, or Perpendicular

Topic 15

Acute, Obtuse, Right or Straight - First Time

Topic 16

90, 180, or 270 Degrees

Topic 17

Triangle Classification - Both

Topic 18

Classifying Polygons by Sides

Topic 19

Classifying Polygons as Regular or Irregular

Topic 20

Quadrilaterals

Topic 21

Parts of a Circle - First Time

Topic 22

Identify Lines, Segments, and Rays - First Time

Topic 23

Triangle Classification - Sides - First Time

Topic 24

Acute, Obtuse, Right or Straight

Topic 25

Triangle Classification - Angles - First Time

Topic 26

Polygons - Number of Sides to Name

Topic 27

Classifying Polygons by Sides

Topic 28

Classifying Polygons by Sides and Regular or Irregular

Topic 29

Quadrilaterals Reversed

Topic 30

Parts of a Circle - True/False

Topic 31

Identify Lines, Segments, and Rays

Topic 32

Triangle Classification - Sides

Topic 33

Acute, Obtuse, Right or Straight (Reversed)

Topic 34

Triangle Classification - Angles

Topic 35

Polygons - Name to Number of Sides

Topic 36

Classifying Polygons by Sides - Reversed

Topic 37

Quadrilaterals - Is Shape of a Type

Topic 38

Circles - Find Diameter from Radius

Level 1

This math topic focuses on the relationship between the radius and diameter of a circle. Learners are tasked with calculating the diameter from given radius values of various circles. This fundamental concept falls under the broader area of 2D geometry and shape classification. The activity aims to strengthen the understanding that the diameter is twice the length of the radius through several practice questions.

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

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Circles - Find Diameter from Radius

Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.


Find the diameter of the circle that has the given radius

r=4d=?

?