OML Search

Solve Problems for Unknown Angles

Related Topics:
Lesson Plans and Worksheets for Grade 4
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 4
Common Core For Grade 4



Videos, examples, and solutions to help Grade 4 students learn how to use the addition of adjacent angle measures to solve problems using a symbol for the unknown angle measure.

Common Core Standards: 4.MD.7

New York State Common Core Math Grade 4, Module 4, Lesson 11

Worksheets for Grade 4

Calculate Adjacent Angles Worksheets

NYS Math Module 4 Grade 4 Lesson 11 Concept Development

Problem 1: Decompose a 360° angle into smaller angles. Recognize that the smaller angles add up to 360°.

Problem 2: Given two intersecting lines and the measurement of one angle, determine the measurement of the other three angles.

NYS Math Module 4 Grade 4 Lesson 11 Problem Set

Write an equation and solve for the unknown angle measurements numerically.
Questions 1 - 4

Write an equation and solve for the unknown angles numerically.
5. O is the intersection of AB and CD.
∠DOA is 160 and ∠AOC is 20°.

6. O is the intersection of RS and TV. ∠TOS is 125°.

7. O is the intersection of WX, YZ, and UO.
∠XOZ is 36°.



NYS Math Module 4 Grade 4 Lesson 11 Homework

Write an equation and solve for the unknown angle measurements numerically.

Question 1 - 4.

5. O is the intersection of AB and CD. ∠COB is 145° and ∠AOC is 35°. Find e° and f°.

6. O is the intersection of QR and ST. ∠QOS is 55°.

7. O is the intersection of UV, WX and YO. ∠VOX is 46°. Find j°, k° and m°.

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
Mathway Calculator Widget


OML Search


We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.