Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 14.1 Answer Key Classify and Sort Two-Dimensional Shapes.

## Texas Go Math Grade 1 Lesson 14.1 Answer Key Classify and Sort Two-Dimensional Shapes

**Explore**

Draw to sort the shapes. Write the sorting rule.

Answer: **Sorting rules:
We can sort two-dimensional shapes into groups.
A sorting rule is a rule that tells us how to sort objects.
Read the sorting rule. Circle the shapes that follow the rule.
**

FOR THE TEACHER • Read the following aloud. Devon wants to sort these shapes to show a group of triangles and a group of rectangles. Draw and write to show how Devon sorts the shapes.

**Answer: Here the question was asked that we need to sort a group of triangles and rectangles. We will represent by diagrammatically.
First, we can sort two-dimensional shapes by comparing:
1. How many sides do they have.
2. How many vertices(corners) do they have.
3. If they have curves or not.
4. The length of their sides.
**

**Math Talk**

**Mathematical Processes**

Is there a shaper that did not go in your groups? Explain.

Answer:** No
Explanation:
No, there are no shapes that did not go in your group, because here we are dealing with two-dimensional shapes and we have triangle, square, circle, rectangle and so on. from the above questions so all of them are grouped. Here are some ways to sort two-dimensional shapes.**

**Model and Draw**

Here are some ways to classify and sort two-dimensional shapes.

A square is a special kind of a rectangle.

**Answer: Closed shape with no sides and no corners are the circles.**

closed shapes with ____**3_**___ sides

triangles

Answer: **3 sides**

**Explanation:
**

closed shapes with ____4____ vertices

rectangles

Answer: **4 vertices
Explanation:
**

**Share and Show**

**Read the sorting rule. Circle the shapes that follow the rule.**

THINK: Vertices (corners) are where the sides meet.

Question 1.

4 vertices (corners)

Answer:** Rectangle, square, trapezium are having the 4 vertices.
Explanation:
The coloured ones are meeting the two sides and also have 4 vertices. **

Question 2.

not curved

Answer: **There are 4 shapes that are not curved. They are parallelogram, triangles, trapezium.
Explanation:
The coloured ones are not curved. These shapes are having sides and corners.**

Question 3.

triangles

Answer: **In the given diagram, there are two triangles.
Explanation:
The coloured ones are the triangles.**

Question 4.

more than 3 sides

Answer: **There are 3 shapes that are more than 3 sides.
Explanation:
The coloured ones are square, rectangle, trapezium. These shapes are having more than 3 sides.**

**Problem Solving**

**Circle the special rectangles in Exercise 6.**

Question 5.

Color the shapes that are circles.

Answer: **In the below diagram, the shapes of circles are coloured.
**

Question 6.

Color the squares red. Color other rectangles blue.

Answer: **In the below diagram, the shapes of circles are coloured.
**

**H.O.T.** Draw 2 different two-dimensional shapes that follow both parts of the sorting rule.

**Answer:
**

**Explanation:**

**– Both are having the same characteristics that follow the sorting rule are having 4 vertices and 4 sides. Moreover, length and breadth are also as follows.**

Question 7.

3 sides and 3 vertices (corners)

Answer: **Triangle
Explanation:
Triangle is having 3 sides and 3 vertices.**

Question 8.

2 sides are long and 2 sides are short

Answer: **Rectangle
Explanation:
Opposite sides are equal.
**

Question 9.

**H.O.T. Multi-Step** Write sorting rules to show two different ways to sort some of these shapes. Then color the shapes that follow one of your rules.

Answer: **Sorting rules.
Explanation:
1. I have coloured shapes having with 4 sides.
2. Others that are not coloured are having with 3 sides.
**

**Daily Assessment Task**

**Choose the correct answer.**

Question 10.

**Analyze** Which shape is a rectangle?

Answer: **Rectangle
**

Question 11.

**Multi-Step** Circle the triangles. Then circle the sorting rule you used.

Answer:** The representation has shown in the below diagram.
**

Question 12.

**Texas Test Prep** Which shape would not be sorted into this group?

Answer: **The middle one cannot be sorted.
Explanation: The rhombus cannot be sorted because it has 4 sides and 4 corners but the other two was the triangle that are having 3 sides.
**

**TAKE HOME ACTIVITY** • Gather some household objects such as photos. coins, and napkins. Ask your child to sort them by shape.

Answer: **Make your child do the activity. Ask them to do square, rectangle, triangle, rhombus, trapezium, parallelogram, etc.**

### Texas Go Math Grade 1 Lesson 14.1 Homework and Practice Answer Key

**Read the sorting rule. Circle the shapes that follow the rule.**

Question 1.

more than 3 sides

Answer: **Rectangle, square.
Explanation:
Here, the question was asking more than 3 sides. So it was a rectangle and square that are having 4 sides.
**

Question 2.

circles

Answer:

**Problem Solving**

**Draw 2 different two-dimensional shapes that follow both parts of the sorting rule.**

Question 3.

4 sides are the same length

Answer:** Square
Explanation:
Square: All sides are equal.
**

**All four interior angles are equal to 90°****All four sides of the square are congruent or equal to each other****The opposite sides of the square are parallel to each other****The diagonals of the square bisect each other at 90°****The two diagonals of the square are equal to each other**

** **

Question 4.

Multi-Step Write sorting rules to show two different ways to sort some of these shapes.

Answer: **Triangle and rectangle.
Explanation:
Rectangle sorting rules:
**

**The fundamental properties of rectangles are:**

**A rectangle is a quadrilateral****The opposite sides are parallel and equal to each other****Each interior angle is equal to 90 degrees****The sum of all the interior angles is equal to 360 degrees****The diagonals bisect each other****Both the diagonals have the same length**

**Triangle sorting rules:
**

**The sum of all the angles of a triangle (of all types) is equal to 180°.****The sum of the length of the two sides of a triangle is greater than the length of the third side.****In the same way, the difference between the two sides of a triangle is less than the length of the third side.****The side opposite the greater angle is the longest side of all the three sides of a triangle.**

** **

**Lesson Check**

**Choose the correct answer.**

Question 5.

Which shape is not curved?

Answer: **Rectangle
Explanation:
**

Question 6.

Which shape is a special rectangle?

Answer:** The middle one.
**

Question 7.

**Multi-Step** Kara is sorting shapes. Read the labels Circle the shapes that belong in each group.

squares

rectangles

Answer: