STAAR Geometry

Two lines that intersect and form right angles are called

• parallel lines

• intersecting lines

• adjacent lines

• perpendicular lines

What kind of angle is this?

• right angle

• obtuse angle

• acute angle

• reflex angle

What kind of angle is this?

• reflex angle

• obtuse angle

• acute angle

• straight angle

What term best defines these lines?

• parallel lines

• straight lines

• perpendicular lines

• intersecting lines

Which angle has exactly 90 degrees?

• acute angle

• right angle

• obtuse angle

• reflex angle

Which angle has less than 90 degrees?

• acute angle

• right angle

• obtuse angle

• reflex angle

Which angle is greater than 90 degrees but less than 180 degrees?

• acute angle

• right angle

• obtuse angle

• straight angle

Which geometric terms means the same shape and same size?

• similar

• adjacent

• congruent

• skew

How many obtuse angles are in an obtuse triangle?

• o

• 1

• 2

• 3

How many degrees are in a triangle?

• 90

• 120

• 180

• 360