Interior Angles of Triangles - Investigate
Interior Angles of Triangles - Investigate
1. Create a triangle using the Polygon tool.
Click the Polygon tool: 
In the workspace below, click to make each corner of the triangle.
Click on the first dot again to complete the triangle.
2. Use the Angle tool to measure the INTERIOR angles of the triangle.
Click the Angle tool: 
Click in the middle of the triangle you created.
3. What is the sum of the three INTERIOR angles?
4. Create a different triangle and measure the INTERIOR angles. What do you notice?
In the workspace below, click to make each corner of the triangle.
Click on the first dot again to complete the triangle.
2. Use the Angle tool to measure the INTERIOR angles of the triangle.
Click the Angle tool:
Click in the middle of the triangle you created.
3. What is the sum of the three INTERIOR angles?
4. Create a different triangle and measure the INTERIOR angles. What do you notice?