Geometry and Angles

Identify the type of angle: An angle that measures more than 90 degrees.

• Obtuse angle

• Acute angle

• Straight angle

• Right angle

Use a protractor to measure the angle: “Draw an angle that measures 120 degrees and measure it using a protractor.”

• 60 degrees

• 120 degrees

• 180 degrees

• 90 degrees

Identify the pair of lines that are parallel: AB and CD

• AC and BD

• XY and ZW

• EF and GH

• AB and CD

Identify the pair of lines that are perpendicular: EF and GH

• LM and NO

• EF and JK

• EF and GH

• AB and CD

Draw a line segment.

• Use a protractor to draw a curved line

• Draw a line segment by freehand without any tools

• Use a compass to draw a circle instead of a line segment

• Use a ruler or straight edge to draw a straight line between two points

Identify the type of line: A line that goes straight up and down.

• Vertical

• Diagonal

• Curved

• Horizontal

The measurements of interior angles of a triangle add up to 180º. Triangle ABC is a right triangle with a right angle at vertex A. What must be true of the angles at vertex B and vertex C ?

• The angles at vertex B and vertex C are both acute.

• The angles at vertex B and vertex C are equal.

• The angles at vertex B and vertex C are both right.

• The angles at vertex B and vertex C add up to 90º.

• 84º

• 26º

• 36º

• 74º

• 100º

• 24º

• 34º

• 36º

This triangle can be classified as:

• obtuse

• scalene

• equilateral

• acute

• right