Triangle Construction and Properties

The video tutorial guides Mountain Vista seventh-graders through lesson 9.4 on constructing polygons. It covers constructing triangles using given angle measures, angles and side lengths, and side lengths alone. The tutorial also explains how to draw quadrilaterals with specific angle measures and includes a real-life example of estimating the area of a triangle. The lesson emphasizes using technology to aid in drawing and understanding geometric shapes.

What is the sum of angles in a triangle?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

Which tool is recommended for drawing triangles electronically?

• Google Drawings

• Desmos Geometry Tool

• Microsoft Paint

• Adobe Illustrator

What is the first step in constructing a triangle with angles 30, 60, and 90 degrees?

• Draw a 30-degree angle

• Draw a 90-degree angle

• Draw a straight line

• Draw a 60-degree angle

When constructing a triangle with side lengths and an angle, what limits the size of the triangle?

• The angle measurement

• The color of the lines

• The type of paper used

• The side measurements

What is the key condition for constructing a triangle with three given side lengths?

• The sides must be less than 10 cm

• The sum of any two sides must be greater than the third

• All sides must be equal

• The sides must form a right angle

What is the importance of locking points when constructing triangles?

• To prevent the points from moving

• To change the shape easily

• To add labels automatically

• To make the triangle colorful

What is the sum of angles in a quadrilateral?

• 360 degrees

• 180 degrees

• 450 degrees

• 270 degrees

In the real-life application example, what are the lengths of the landscape boards used to enclose the flower bed?

• 3, 4, and 5 yards

• 2, 3, and 4 yards

• 4, 5, and 6 yards

• 5, 6, and 7 yards

What is the formula for the area of a triangle?

• Base times height

• Base times height divided by two

• Base plus height

• Base minus height

What is the angle measure required to draw a quadrilateral with angles 60, 120, 70, and 110 degrees?

• The angles must sum to 450 degrees

• The angles must sum to 360 degrees

• The angles must sum to 270 degrees

• The angles must sum to 180 degrees