Drawing Triangles Using Given Angles

This lesson teaches how to draw triangles using given angles. It begins with a review of triangle angle properties, emphasizing that the sum of angles in a triangle is always 180 degrees. The lesson explains how to use a protractor correctly and provides a step-by-step guide to drawing an isosceles triangle with specific angle measurements. The lesson concludes with a summary of the key points covered.

What is the sum of all angles in any triangle?

• 180 degrees

• 90 degrees

• 270 degrees

• 360 degrees

In an equilateral triangle, what is the measure of each angle?

• 120 degrees

• 45 degrees

• 60 degrees

• 90 degrees

What is a common mistake when using a protractor?

• Using it upside down

• Not holding it steady

• Measuring from the wrong side

• Not aligning it with the angle's lines

If a triangle has two angles of 50 degrees, what is the measure of the third angle?

• 50 degrees

• 80 degrees

• 100 degrees

• 60 degrees

What type of triangle is formed with angles of 50, 50, and 80 degrees?

• Equilateral

• Scalene

• Right

• Isosceles