Determining acute vertical angles

The video tutorial covers the basics of angles, focusing on acute angles and vertical angles. It begins with a discussion on angles less than 90 degrees, followed by an explanation of vertical angles, including their definition and properties. The tutorial also demonstrates how to create and identify vertical angles using intersecting lines, concluding with examples to reinforce the concepts.

What is the defining characteristic of an acute angle?

• It is less than 90 degrees.

• It is more than 90 degrees.

• It is exactly 90 degrees.

• It is a straight line.

Which of the following is true about vertical angles?

• They share the same vertex and are opposite each other.

• They are always acute angles.

• They are formed by parallel lines.

• They share a side.

How are vertical angles formed?

• By the intersection of two lines.

• By two parallel lines.

• By a single line.

• By a right angle.

Which of the following is NOT a property of vertical angles?

• They are always right angles.

• They are formed by intersecting lines.

• They do not share any sides.

• They share a vertex.

If angle BTFC is a vertical angle, which of the following could be its vertical pair?

• Angle DFG

• Angle PQR

• Angle XYZ

• Angle ABC