Chapter 4 – Angles in Radians and Degrees Answer Key CK-12 PreCalculus Concepts 8 4.8 Applications of Basic Triangle Trigonometry Answers 1. 2. Find the angle in the triangle (complementary angles) and then use tangent. 3. 249.8 feet 4. 5. Tangent 6. 57.05 feet 7. 8. This is a right triangle, so you can use the Pythagorean Theorem 9. 6.32 ...

Then draw the diagonal AC to form two triangles. Finding the Fourth Angle of a Quadrilateral. If the measurements of three angles of a quadrilateral are known, then the missing angle can be calculated. Example 10. Find the value of the pronumeral x in the accompanying diagram. Give reasons for your answer. Solution:

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Angle Sum Theorem If the measures of two angles of a triangle are known, the measure of the third angle can always be found Angle Sum The sum of the measures of the angles of a triangle is 180. Theorem In the figure at the right, rnLA + rnZ_B + = 180. Find ml—T. rnLR + m LS + m LT — - 180 25 + 35 + mZT = 180 60 + mLT - 180 120 Angle Sum Theorem

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Interactive Mathematics Activities for Arithmetic, Geometry, Algebra, Probability, Logic, Mathmagic, Optical Illusions, Combinatorial games and Puzzles.

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Mar 09, 2013 · Chapter 7 Test: Angles, Triangles, & Quadrilaterals 14 Questions | By Kjdegraff | Last updated: Mar 9, 2013 | Total Attempts: 732 Questions All questions 5 questions 6 questions 7 questions 8 questions 9 questions 10 questions 11 questions 12 questions 13 questions 14 questions

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Triangles are polygons that have three sides, three vertices, and three angles. The sum of the measures of the angles of a triangle is 180 . Examples: Angle A = 65 Angle B = 60 Angle C = ? 180 – 65 – 60 = 55 Angle C = 55 1.) Given triangle XYZ: Angle X = 90 Angle Y = 45 Angle Z = _____ 2.) Given triangle MNO: Angle M = 15 Angle N = _____ Angle O = 135 3.) Given right triangle ABC: Angle A is the right angle Angle B = 55 Angle C = _____ Angle H? _____ 4.) Given equiangular triangle FGH ...