Refer to our Texas Go Math Grade 3 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 3 Lesson 15.1 Answer Key Classify Quadrilaterals.

## Texas Go Math Grade 3 Lesson 15.1 Answer Key Classify Quadrilaterals

**Unlock the Problem**

An angle is formed by two rays that share an endpoint. Two dimensional figures have angles formed by two line segments that share an endpoint. The shared endpoint is called a vertex. The plural of vertex is vertices.

Jason drew this polygon on dot paper.

There are _________ angles.

There are _________ sides.

There are 4 angles.

There are 4 sides.

**Math Idea**

A polygon is a closed plane figure with straight sides that are line segments.

Jason’s polygon has 2 right angles. They form square corners. You can use the corner of a sheet of paper to tell if an angle is a right angle. Draw boxes to show the right angles.

Look at Jason s polygon. How many pairs of sides are parallel?

Lines that appear to never cross or meet and are always the saine distance apart are parallel lines.

So, Jason’s polygon has ___________ pair of parallel sides.

Answer:

So, Jason’s polygon has 1 pair of parallel sides.

**Classify Quadrilaterals:** Quadrilaterals are named by their sides and their angles.

**ERROR Alert**

Some quadrilaterals cannot be classified as a trapezoid, parallelogram, rectangle, square, or rhombus.

Describe quadrilaterals.

quadrilateral

__________ sides

__________ angles

Answer:

4 sides

4 angles

**trapezoid**

exactly _________ pair of opposite sides that are parallel lengths of sides could be the same

Answer:

exactly 1 pair of opposite sides that are parallel lengths of sides could be the same

**parallelogram**

__________ pairs of opposite sides that are parallel

__________ pairs of sides that are of equal length.

Answer:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length.

**rectangle**

_________ pairs of opposite sides that are parallel

__________ pairs of sides that are of equal length

__________ right angles

Answer:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length

4 right angles

**square**

_________ pairs of opposite sides that are parallel

_________ sides that are of equal length

_________ right angles

Answer:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

4 right angles

**rhombus**

_________ pairs of opposite sides that are parallel

_________ sides that are of equal length

Answer:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

**Math Talk**

**Mathematical Processes**

Explain why a square can also be named a rectangle or a rhombus.

Answer:

Explanation:

A square can be described as a rectangle because a square has 4 equal sides

and a rectangle has 2 parallel sides are equal

In rhombus 4 sides are equal so, A rhombus can also be called as a square

Every Square is a rectangle, but not every rectangle is a square.

A square is a special kind of closed figure with four straight sides and four right angles that also has sides that all have equal length. Therefore, we can conclude that: A Square is a special kind of rectangle

**Share and Show**

Look at the quadrilateral at the right.

Question 1.

How many right angles are in the quadrilateral? ________ right angles

Answer:

4 right angles

Explanation:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length

4 right angles

Question 2.

Which sides appear to be parallel? ___________

Answer:

A and C, B and D are parallel

Explanation:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length

4 right angles

Question 3.

Name the quadrilateral. _____________

Answer: A Rectangle

Explanation:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length

4 right angles

**Circle all the words that describe the quadrilateral.**

Question 4.

rectangle

rhombus

square

parallelogram

Answer: Square

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

4 right angles

Question 5.

rhombus

parallelogram

square

rectangle

Answer: Rhombus

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

**Problem Solving**

**H.O.T. Analyze** Write all or some to complete the sentence for 6-9.

Question 6.

The opposite sides of __________ rectangles are parallel.

Answer: All

Explanation:

The opposite sides of all rectangles are parallel.

Question 7.

_________ sides of a rhombus are the same length.

Answer: All

Explanation:

All sides of a rhombus are the same length.

Question 8.

_________ rhombuses are squares.

Answer: Some

Explanation:

Some rhombuses are squares.

Question 9.

_________ trapezoids have 1 pair of opposite sides that are parallel.

Answer: All

Explanation:

All trapezoids have 1 pair of opposite sides that are parallel.

Question 10.

**Communicate** I am a quadrilateral that has no right angles and 4 sides that are of equal length. What figure am I?

Answer: Rhombus

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

Question 11.

**H.O.T. Multi-Step** I am a polygon that has 4 sides and 4 angles. All of my angles are right angles. Circle all the figures that I could be.

quadrilateral

rectangle

square

rhombus

trapezoid

parallelogram

Answer: Square and rhombus

Explanation:

Circled the figures that I am a polygon that has 4 sides and 4 angles.

All of my angles are right angles.

**Daily Assessment Task**

**Fill in the bubble for the correct answer choice.**

Question 12.

While playing football after school, Jesse notices that the distance marker contains a quadrilateral with one pair of opposite sides that are parallel. What type of quadrilateral is it?

(A) rectangle

(B) trapezoid

(C) square

(D) rhombus

Answer: Trapezoid

Explanation:

Exactly 1 pair of opposite sides that are parallel lengths of sides could be the same

Question 13.

Dean makes a pattern using 10 square tiles. How many pairs of opposite sides are parallel in the 10 square tiles?

(A) 20

(B) 10

(C) 40

(D) 0

Answer: A

Explanation:

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

4 right angles

Question 14.

**Multi-Step** Carina is using scraps of fabric to make a quilt. How many of the fabric scraps are in the shape of rhombuses?

(A) 1

(B) 2

(C) 0

(D) 3

Answer: 2

Explanation:

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

**Texas Test Prep**

Question 15.

What is a true statement about the quadrilateral at the right?

(A) There is I right angle.

(B) There are 4 right angles.

(C) There are no right angles.

(D) There are 2 right angles.

Answer: D

Explanation:

The above quadrilateral has 2 right angles

option D is true.

### Texas Go Math Grade 3 Lesson 15.1 Homework and Practice Answer Key

**Circle all the words that describe the quadrilateral.**

Question 1.

parallelogram

trapezoid

rhombus

rectangle

Answer: Rectangle

Explanation:

2 pairs of opposite sides that are parallel

2 pairs of sides that are of equal length

4 right angles

Question 2.

parallelogram

trapezoid

rhombus

rectangle

Answer: Trapezoid

Explanation:

Exactly 1 pair of opposite sides that are parallel lengths of sides could be the same

**Problem Solving**

**Write all or some to complete the sentence for 3-6.**

Question 3.

_________ rectangles are squares.

Answer: Some

Every Square is a rectangle, but not every rectangle is a square.

Question 4.

__________ angles of a rectangle are right angles.

Answer: All

Explanation:

All angles of a rectangle are right angles.

Question 5.

__________ parallelograms have all 4 sides that are equal in length.

Answer: Some

Explanation:

Some parallelograms have all 4 sides that are equal in length.

Question 6.

__________ trapezoids have 2 sides that are equal in length.

Answer: Some

Some trapezoids have 2 sides that are equal in length.

Question 7.

I am a polygon that has 2 pairs of opposite sides that are parallel. Circle all of the figures that I could be.

Answer:

Question 8.

I am a quadrilateral that has 4 right angles. My opposite sides are parallel and of equal length. What figure am I?

Answer: Square

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

4 right angles

**Lesson Check**

**Fill in the bubble completely to show your answer.**

Question 9.

Lily makes an art poster that has exactly one pair of opposite sides that are parallel and 2 sides that are the same length. What figure is Lily’s poster?

(A) trapezoid

(B) rectangle

(C) rhombus

(D) parallelogram

Answer: Trapezoid

Explanation:

Exactly 1 pair of opposite sides that are parallel lengths of sides could be the same

Question 10.

Desmond draws a polygon that has 4 sides that are the same length and no right angles. How can Desmond classify the polygon he drew?

(A) square

(B) rhombus

(C) rectangle

(D) parallelogram

Answer: B

Explanation:

Explanation:

2 pairs of opposite sides that are parallel

4 sides that are of equal length

Question 11.

Kara makes the kite shown at the right from 4 triangles. What is the shape of Kara’s kite?

(A) square

(B) parallelogram

(C) rhombus

(D) quadrilateral

Answer: D

Explanation:

A quadrilateral is a polygon that has exactly four sides. (This also means that a quadrilateral has exactly four vertices, and exactly four angles.)

Question 12.

**Multi-Step** Ben is making cutouts to use in an art design. How many of the cutouts have the shape of a rectangle?

(A) 5

(B) 2

(C) 4

(D) 3

Answer: B

Explanation:

Ben is making cutouts to use in an art design.

2 of the cutouts have the shape of a rectangle