Name: SAT Math Help & School Math Mastery
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#33494

angles

triangle

geometry

hard

180 sec

In triangle $X Y Z$ , the measure of angle $X$ is $(3 a - 10)^{\circ}$ , and the measure of angle $Y$ is $(2 a + 20)^{\circ}$ . If triangle $X Y Z$ is isosceles and angle $X$ is the smallest angle, what is the measure of angle $Z$ ?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.