Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Which shapes could be classified as quadrilaterals?
- rhombus and pentagon
- rectangle and trapezoid
- triangle and square
- hexagon and octagon
Sorry, that is not right! A rhombus has 4 sides, but a pentagon has 5 sides.
That is right! Both shapes have 4 sides.
Sorry, that is not right! A square has 4 sides, but a triangle has only 3 sides.
Sorry, that is not right! A hexagon has 6 sides, and an octagon has 8 sides.
Classify this shape by the length of its sides.
- There are no equal sides.
- There is 1 pair of equal sides.
- There are 2 pairs of equal sides.
- All sides are equal in length.
Sorry, that is not right! Look closely at the length of each side.
Sorry, that is not right! There is more than 1 pair of equal sides.
That is right! A parallelogram has 2 pairs of equal sides.
Sorry, that is not right! Look closely at the shape. Not every side is the same length.
Which of these shapes do not have any parallel or perpendicular sides?
Sorry, that is not right! A rectangle has perpendicular and parallel sides.
Sorry, that is not right! This trapezoid has 1 pair of parallel sides.
Sorry, that is not right! A rhombus has 2 pairs of parallel sides.
That's right! A kite does not have any perpendicular or parallel sides.
What type of angle(s) does this shape have?
- only obtuse angles
- only acute angles
- obtuse and acute angles
- right angles and acute angles
That is right! A regular pentagon has 5 equal sides and 5 obtuse angles.
Sorry, that is not right! The angles in this pentagon are greater than 90 degrees.
Sorry, that is not right! This pentagon does have obtuse angles, but it does not have any acute angles.
Sorry, that is not right! The angles in this pentagon are all greater than 90 degrees.
How many congruent angles does this shape have?
- 0
- 1
- 2
- 3
Sorry, that is not right! A scalene triangle has 0 congruent angles. This is not a scalene triangle.
Sorry, that is not right! A triangle cannot have only 1 congruent angle. It must have 2 or 3 congruent angles.
That is right! An isosceles triangle has 2 congruent angles.
Sorry, that is not right! Equilateral triangles have 3 congruent angles. This is not an equilateral triangle.
What would be the best classification for this triangle?
- obtuse scalene triangle
- obtuse isosceles triangle
- right scalene triangle
- right isosceles triangle
That is right! This triangle has 1 obtuse angle and no equal sides.
Sorry, that is not right! This triangle has an obtuse angle, but it does not have 2 equal sides.
Sorry, that is not right! This triangle has no equal sides, but it does not have a right angle.
Sorry, that is not right! This triangle does not have a right angle, and it does not have 2 equal sides.
Which of these is NOT an attribute of this regular hexagon?
- equal sides
- congruent angles
- pairs of parallel sides
- acute angles
Sorry, that is not right! All of the sides of a regular polygon, like this hexagon, are equal.
Sorry, that is not right! In regular polygons, like this hexagon, all of the angles are congruent.
Sorry, that is not right! This regular hexagon has 3 pairs of parallel sides.
That is right! A regular hexagon has 6 obtuse angles but no acute angles.
Which of these attributes of an equilateral triangle are true?
- no equal sides
- only 2 equal sides
- 3 acute angles
- 1 right angle
Sorry, that is not right! In an equilateral triangle, all of the sides are equal.
Sorry, that is not right! An isosceles triangle has only 2 equal sides.
That is right! An equilateral triangle has 3 equal sides and 3 acute angles.
Sorry, that is not right! Only right triangles have 1 right angle.
Which of the following attributes does a square have? Select all that apply.
- equal side lengths
- pairs of parallel sides
- perpendicular sides
- acute angles
This is incorrect. A square has 4 right angles.
Sorry, that is not right! A square has 4 right angles.
That is right! A square does have perpendicular sides.
What shape has the following attributes: 4 sides, 2 pairs of equal side lengths, 2 pairs of parallel sides, 4 right angles?
- rectangle
- trapezoid
- pentagon
- rhombus
That is right! A rectangle has 4 sides, 2 pairs of equal side lengths, 2 pairs of parallel sides, and 4 right angles.
Sorry, that is not right! A trapezoid has only 1 pair of parallel sides.
Sorry, that is not right! A pentagon has 5 sides.
Sorry, that is not right! A rhombus does not have 4 right angles.
Summary
Questions answered correctly:
Questions answered incorrectly: