Finding Unknown Length in 3D Figures

A student was finding the unknown length of the triangle but they made a mistake.

What step in their work is the mistake?

Tags

CCSS.8.G.B.7

Complete the problem.

c

d

b

e

f

a

Tags

CCSS.8.G.B.7

Tags

CCSS.5.G.A.2

What is the EXACT length of the blue diagonal line?

Tags

CCSS.8.G.B.7

What is the APPROXIMATE length of the blue diagonal line?

Tags

CCSS.8.G.B.7

Tags

CCSS.8.G.B.8

Tags

CCSS.8.G.B.8

What is the EXACT length of the blue diagonal line?

Mathematical Equivalence

OFF

Tags

CCSS.8.G.B.7

What is the APPROXIMATE length of the blue diagonal line to the nearest tenth?

Mathematical Equivalence

OFF

Tags

CCSS.8.G.B.7

Order the following values from greatest to least.

Tags

CCSS.HSN.RN.A.2