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Water Quality Lab: Angle Rigs worksheet preview

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Water Quality Lab: Angle Rigs

Write and solve equations using complementary, supplementary, vertical, and adjacent angles in water-quality lab equipment layouts.

Grade 7MathInteractive · Printable

Aligned to7.G.B.5

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 Common Core standard
  • Printable answer key
  • 14 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 7
Subject
Math
Question types
Fill in the blank, Multiple choice, Short answer

About this worksheet

What students practice

  • Students write equations using complementary, supplementary, vertical, and adjacent angle relationships.
  • Students solve angle equations and distinguish a variable's value from an angle's measure.
  • Students explain why adjacent angles do not always have a sum of 180°.

How to use

Use after introducing angle relationships. Have students write an equation beside each calculation, then discuss the final equipment-layout error.

Curriculum

Common Core standard covered

7.G.B.5

Use supplementary, complementary, vertical, and adjacent angles to write and solve equations for an unknown angle.

Preview

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Name Date

Water Quality Lab: Angle Rigs

Use angle relationships to check the lab’s equipment layouts.

Read the Layouts

The community science lab uses light sensors to study water clarity. Use the stated angle relationships and labels, not visual estimates.

1.
A sensor bracket forms a right angle. An interior ray divides it into the two labeled angles. Which equation can be used to find x?90°38°(2x)°
  • A. 2x = 38
  • B. 38 + 2x = 180
  • C. x + 38 = 90
  • D. 38 + 2x = 90
2.
A support arm divides a straight angle on a testing bench.180°67°x°

Find the unknown angle measure:  °

3.
Two adjacent angles fill the opening of a sample-holder hinge.128°49°x°

What is the measure of the angle labeled x°?  °

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