10.07 Classify 2D figures
Lesson
Are you ready?
Being able to identify parallel lines can help us in this lesson.
Select the diagram showing a pair of parallel lines:
A
B
C
D
Learn
This video shows you how to classify shapes based on a number of key features including sides and angles.
Loading video...
Apply
Select all parallelograms:
A four-sided shape has two pairs of opposite, parallel sides marked with arrowheads. One pair is marked with single arrowheads, and the other pair is marked with double arrowheads. A
A four-sided convex polygon has four sides of unequal lengths. All sides are unmarked. B
A four-sided shape has two pairs of adjacent sides marked with tick marks. One pair is marked with single tick marks, and the other pair is marked with double tick marks. C
A four-sided shape has two pairs of opposite, parallel sides marked with arrowheads. One pair is marked with single arrowheads, and the other pair is marked with double arrowheads. D
A four-sided concave polygon has four sides of unequal lengths. All sides are unmarked. E
A four-sided shape has two pairs of adjacent sides marked with tick marks. One pair is marked with single tick marks, and the other pair is marked with double tick marks. F
Remember!
To name a shape, look at its key features, including sides, angles, and vertices.