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*** UPDATED on 91817 to fix errors and reflect recent changes to Eureka MathEngageNY *** The EngageNY (Eureka Math) math curriculum is pretty awesome. The teacher materials include answers for the problem sets (class practice) and assessments, but NOT the homework. I have taken care of that by creating the answer keys myself. ***Not only will you get the answers, but you will also see HOW I solved each question. *** Answers are provided for all homework assignments in Module 4. I have not yet completed answer keys for the Sprints. That will be next. For video tutorials on every EngageNY (Eureka Math) lesson, please visithttp:EMBARC.online Skip SearchSkip NavigationHomeSite pagesTagsCalendarSite newsCoursesGrade 4Gr4GeneralGr4Mod1Gr4Mod2Gr4Mod3Gr4Mod4ParticipantsGrade 4 Module 4Topic A: Lines and AnglesLesson 1Lesson 2Lesson 3Lesson 4Topic B: Angle MeasurementLesson 5Lesson 6Lesson 7Lesson 8Mid-Module ReviewTopic C: Problem Solving with the Addition of Angl...Lesson 9Lesson 10Lesson 11Topic D: Two-Dimensional Figures and SymmetryLesson 12Lesson 13Lesson 14Lesson 15Lesson 16End-of-Module ReivewGr4Mod5Gr4Mod6Gr4Mod7General InformationKindergartenGrade 1Grade 2Grade 3Grade 5Grade 6Grade 7Grade 8Algebra IGeometryAlgebra II Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Question 1.Answer:Eureka Math Grade 4 Module 4 Lesson 13 Problem Set Answer KeyQuestion 1.Classify each triangle by its side lengths and angle measurements. Circle the correct names.Answer:Question 2.∆ ABC has one line of symmetry as shown. What does this tell you about the measures of ∠A and ∠C?Answer:3. ∆ DEF has three lines of symmetry as shown.Question a.How can the lines of symmetry help you to figure out which angles are equal?Question b.∆ DEF has a perimeter of 30 cm. Label the side lengths.Answer:Question 4.Use a ruler to connect points to form two other triangles. Use each point only once. None of the triangles may overlap. One or two points will be unused. Name and classify the three triangles below. The first one has been done for you.Answer:Question 5a.List three points from the grid above that, when connected by segments, do not result in a triangle.Answer:Question 5b.Why didnt the three points you listed result in a triangle when connected by segments?Answer:Question 6.Can a triangle have two right angles? Explain.Answer:Eureka Math Grade 4 Module 4 Lesson 13 Exit Ticket Answer KeyUse appropriate tools to solve the following problems:Question 1.The triangles below have been classified by shared attributes (side length or angle type). Use the words acute, right, obtuse, scalene, isosceles, or equilateral to label the headings to identify the way the triangles have been sorted.Answer:Question 2.Draw lines to identify each triangle according to angle type and side length.Answer:Question 3.Identify and draw any lines of symmetry in the triangles in Problem 2.Answer:Eureka Math Grade 4 Module 4 Lesson 13 Homework Answer KeyQuestion 1.Classify each triangle by its side lengths and angle measurements. Circle the correct names.Answer:Question 2a.∆ ABC has one line of symmetry as shown. Is the measure of ∠A greater tyhan, less than or equal to ∠C?Answer:Question 2b.∆ DEF is scalene. What do you observe about its angles? Explain.Answer:Question 3.Use a ruler to connect points to form two other triangles. Use each point only once. None of the triangles may overlap. Two points will be unused. Name and classify the three triangles below.Answer:Question 4.If the perimeter of an equilateral triangle is 15 cm, what is the length of each side?Answer:Question 5.Can a triangle have more than one obtuse angle? Explain.Answer:Question 6.Can a triangle have one obtuse angle and one right angle? Explain.Answer:
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