Year 9 Unit 6

What is an acute angle?

• An angle between 90° and 180°

• An angle less than 90°

• An angle equal to 90°

• An angle greater than 180°

What are alternate angles?

• Angles that add up to 180°

• Angles that form a Z-shape between parallel lines and are equal

• Angles that form an F-shape between parallel lines and are equal

• Angles on a straight line

What are angle rules?

• Rules for measuring angles with a protractor

• A set of rules used to solve problems with angles

• Rules that determine the type of angle

• Rules for drawing angles

What is an angle?

• The size of a triangle

• The space between two straight lines meeting at a vertex, measured in degrees

• The distance between two parallel lines

• The intersection of two straight lines

What is the sum of angles on a straight line?

• 90°

• 180°

• 360°

• 270°

What does congruent/congruence mean?

• Two shapes with different angles

• Two shapes that are the same size and shape

• Two shapes that are different sizes but the same shape

• Two angles that add up to 90°

What are corresponding angles?

• Angles that form a Z-shape and are equal

• Angles that form an F-shape and are equal between parallel lines

• Angles that are opposite each other and are equal

• Angles on a straight line

What is a degree?

• A) A unit of measure for the size of a shape

• B) A unit of measure for the size of an angle

• C) A unit of measure for length

• D) A unit of measure for area

What is an isosceles triangle?

• A triangle with three equal sides

• A triangle with two equal sides and two equal angles

• A triangle with no equal sides

• A triangle with a right angle

What is an obtuse angle?

• An angle less than 90°

• An angle greater than 180°

• An angle between 90° and 180°

• An angle equal to 90°