Module 9 Two Dimensional

What are these lines called?

• parallel lines

• perpendicular lines

• intersecting lines

• line segments

Which two lines in this shape are parallel?

• AB and DC

• BC and AD

• BD and CA

• ABCD

Does this object have a line of symmetry?

• yes

• no

Does this object have a line of symmetry?

• yes

• no

This shape has four sides. The sides are not the same length. There are two pairs of parallel lines and no right angles.

• trapezoid

• square

• scalene triangle

• parallelogram

How many lines of symmetry does this shape have?

• 0

• 1

• 2

• 3

Which answer choice correctly describes what kind of triangle this is?

• acute, scalene

• equilateral, obtuse

• acute, isosceles

• right, scalene

Which statement correctly compares this triangle and trapezoid?

• Both figures are polygons with at least 2 acute angles.

• Both figures are polygons whose interior angles total 360 degrees.

• Both figures are polygons whose interior angles total 180 degrees.

• Both figures are polygons with one pair of parallel opposite sides.

Keysha draws a regular hexagon with six angles that are all equal. If the total
measure of the angles is 720°, how many degrees is each angle of the hexagon?

• 120°

• 144°

• 720°

• 125°

^{Directions: The graphic organizer below shows how different kinds of polygons are related. Use the graphic organizer to answer the questions that follow:}
If all sides of a four-sided polygon are the same length, where does the polygon best
fit in the graphic organizer?

• 2

• 3

• 4

• 5