16) 5 10 ft 3 5 9 ft 10 ft 3 11.2 ft 11.2 ft 11.2 ft 17) 9 yd 9 yd 9 yd 9 yd 15 yd 12 yd 13 yd 5 yd 18) 16 in. 6 in. 10 in. 10 in. 9 in. 9 in. 16 in. 19) Find the area of each triangle in the fi gure. Then, fi nd the area of the rectangle that is formed by both triangles. What do you notice? 8 in. 5 in. 5 in. 8 in. 20) How many different triangles can you fi nd in the fi gure below? Objective 2: Find Angle Measures in a Triangle 21) The measures of all the angles of a triangle add up to what number? 22) Answer true or false. A triangle can have two right angles. Find mx in each triangle. 23) 54° 67° x 24) 52° 101° x 25) 21° x 123° 26) 128° x 32° 27) 136° x 31° 28) x 72° 72° 29) x 28° 30) x 30° Objective 3: Classify Triangles 31) What is an acute triangle? 32) What is an obtuse triangle? 33) What is a scalene triangle? 34) What is an equilateral triangle? 316 CHAPTER 4 Basic Geometry Concepts and Algebra www.mhhe.com/messersmith
messersmith_power_prealgebra_1e_ch4_7_10
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