This angle is(8) degrees. 9. Answer 107o we are using the outside numbers because the angles edge is to the left Summarizing Lesson 1.4 Write a note to the absent student explaining lesson 1.4, be very specific about the things we learned. Three adjacent angles are at a point. 44º 3. Each pair of angles is either supplementary or congruent to each other. Geometry Worksheets Angles Worksheets for Practice and Study. E F G 86! Compute the sine, cosine, or tangent of the given angle (whichever is most convenient for you). 7. m∠8 8. m∠5 9. m∠2 10. m∠1 11. m∠6 12. m∠7 For Exercises 13 and 14, use the figure at the right. (2) / This angle is z f degrees. The first angle is represented by x° , the second angle is 20° more than the first, and the third angle is 20° more than the second angle. 10. Example: Find the measure of the indicated angle to the nearest degree. The measure of the supplement of an angle is 6° more than twice the measure of the angle. 11. Evaluate the inverse trig function for that number. Answer Key 1. This angle is 1 1 1 degrees. This angle is 126 degrees. Using Trigonometry to Find Angle Measures Date_____ Period____ Find each angle measure to the nearest degree. Hence x + y + 64 = 180° Solve for x x = 180 - 64 - 52 = 64° . FINDING UNKNOWN ANGLE MEASURES #2-KEY Directions: For each set of parallel lines, you are given the measure of one angle. 47! 68° 8) 19 27? 1) 4) 7) 3) 6) 9) 2) 5) 8) T U V 63! 55 51 27 10) 24 14 12) 20 14) 56 52 55 34 11) Here is a graphic preview for all of the Angles Worksheets.You can select different variables to customize these Angles Worksheets for your needs. Let x = m∠B. m∠A + m∠B + … Find the measurements of all three angles. FINDING UNKNOWN ANGLE MEASURES—MIXED ANGLES--#6-KEY Directions: Find the measure of each missing angle in the parallel lines and transversals below. X= 70º y= 110º z=70º 10. Use your knowledge of parallel lines and transversals to find the measures of each other angle. Measuring Angles ANSWER KEY Use your protractor to extend the lines and measure each angle. Answer Keys Click on the file name to access the file: If you have difficulty accessing the Google doc via the link, you may download the appropriate PDF file attached to the bottom of this page. 65º 2. Created Date: What is the measure of an angle, if three is subtracted from twice the supplement and the result is 297 degrees? 1 06 degrees. 7) 55 51? 1) tan A = 2.0503 3) tan Y = 0.6494 5) v = 0.6820 Oe6ðX) 2) cosz=o.1219 4) sin U = 6) sin C = 0.8746 0.2756 19 Find the measure of the indicated angle to the nearest degree. 82º 5. 45° 9) 34 55 Write and solve an equation. In triangle ABC, m∠A is twice m∠B, and m∠C is 8 more than m∠B. 43º 6. (4) This angle is J! 1) tan A = 2.0503 64° 2) cos Z = 0.1219 83° 3) tan Y = 0.6494 33° 4) sin U = 0.8746 61° 5) cos V = 0.6820 47° 6) sin C = 0.2756 16° Find the measure of the indicated angle to the nearest degree. The Angles Worksheets are randomly created and will never repeat so you have an endless supply of quality Angles Worksheets to use in the classroom or at home. 27º 8. X= 102º y= 78º z=102º (3) degrees. 107º 4. Find the two angles. Finding Angle Measures in Triangles You can use algebra to solve problems involving triangles. 37! Answer key. 150̊ 150̊ 30̊ 150̊ 30̊ Example: Given an angle of … What is the measure of each angle? Find the missing arc . More information on what sine, cosine and tangent functions are you can find in this article Finding missing sides of triangles. This angle is (6) This angle is 13 degrees. Answer The angle measure is approximately 730 Using a protractor continued… What is the measure of the ange? All you have to do is set up and solve the appropriate equation for each situation. Triangle - Interior Angles Find the measure of the indicated angle in each triangle. 38º 7. (7) This angle is 65 degrees. 45º 9. Using Trigonometry to Find Angle Measures Name key Date Period CCS x — x— cos Find each angle measure to the nearest degree.