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:
