Lesson 15: Practice Problems

Problem 1

In triangle , the measure of angle is .

  1. Give possible measures for angles and if triangle is isosceles.

  2. Give possible measures for angles and if triangle is right.

Problem 2

Select all sets of angles, measured in degrees, that a triangle could be constructed with.

If you get stuck, consider making a line segment. Then use a protractor to measure angles with the first two angle measures.

  1. 60, 60, 60

  2. 90, 90, 45

  3. 30, 40, 50

  4. 90, 45, 45

  5. 120, 30, 30

Problem 3

Angle in triangle is obtuse. Can angle or angle be obtuse? Explain your reasoning.

Problem 4 From Unit 1 Lesson 3

For each pair of polygons, describe the transformation that could be applied to Polygon A to get Polygon B.

  1. A pair of polygons, A and B
  2. A pair of polygons, A and B
  3. A pair of polygons, A and B

Problem 5 From Unit 1 Lesson 14

On the grid, draw a scaled copy of quadrilateral using a scale factor of .

Quadrilateral ABCD is drawn on a grid.