Constructing and Measuring Triangles

This video tutorial explains how to construct an angle-side-angle (ASA) triangle. It begins with an introduction to ASA triangles, followed by detailed steps to draw the base line, measure the first angle of 50°, and the second angle of 70°. The tutorial concludes with instructions on finalizing and labeling the triangle.

What does ASA stand for in the context of triangles?

• Side-Angle-Side

• Angle-Side-Side

• Angle-Side-Angle

• Side-Side-Side

What is the first step in constructing an ASA triangle?

• Erase extra lines

• Label the triangle

• Draw the base line

• Measure the angles

How long should the base line be when constructing the triangle in the video?

• 10 cm

• 5 cm

• 12 cm

• 8 cm

Where should the protractor be placed to measure the first angle?

• At the midpoint of the line

• At the center of the line

• At the end of the line

• At the top of the line

What is the measure of the first angle in the triangle?

• 70°

• 50°

• 40°

• 60°

How should the second angle be measured?

• Using a ruler

• Using a compass

• Using a set square

• Using a protractor

What is the measure of the second angle in the triangle?

• 60°

• 70°

• 40°

• 50°

What should be done after drawing the two angles?

• Label the triangle

• Draw a circle

• Erase the base line

• Measure the angles again

What is the length of the base line in the labeled triangle?

• 10 cm

• 12 cm

• 5 cm

• 8 cm

What can be done with the extra lines after constructing the triangle?

• Erase them if desired

• Color them

• Leave them as they are

• Measure them