School Improvement in Maryland

Sample Item
Selected Response Item for Grade 6

Standard 2.0 Knowledge of Geometry

Topic A. Plane Geometric Figures

Indicator 2. Analyze geometric relationships

Objective c. Determine a third angle measure of a triangle given two angle measures

Assessment limit: Use the concept of the sum of angles in any triangle is 180° without using a diagram

The measure of the first angle of a triangle is 48°. The measure of the second angle is 32°. What is the measure, in degrees, of the third angle?

  1. 20°
  2. 80°
  3. 100°
  4. 120°

Correct Answer
C. 100°
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