Refer to our Texas Go Math Grade 2 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 2 Lesson 14.1 Answer Key Two-Dimensional Shapes.

## Texas Go Math Grade 2 Lesson 14.1 Answer Key Two-Dimensional Shapes

**Explore**

Use a ruler. Draw a shape with 3 straight sides. Then draw a shape with 4 straight sides.

FOR THE TEACHER • Have children use rulers as straight edges for drawing the sides of shapes. Have children draw a two-dimensional shape with 3 sides and then a two-dimensional shape with 4 sides.

Answer:

Explanation:

In the above image we can observe two shapes. The shape with 3 straight sides is called as triangle. The shape with 4 straight sides is called as quadrilateral.

**Math Talk**

**Mathematical Processes**

Describe how your shapes are different from the shapes a classmate drew.

Answer:

The classmate drawn a triangle and quadrilateral. I drawn pentagon and hexagon. So, the shapes are different.

**Model and Draw**

You can count sides and vertices to name two-dimensional shapes.

How many sides and vertices does each shape have?

Answer:

Explanation:

A polygon with 3 sides is called as triangle. This polygon has 3 vertices.

A polygon with 4 sides is called as quadrilateral. This polygon has 4 vertices.

A polygon with 5 sides is called as pentagon. This polygon has 5 vertices.

A polygon with 6 sides is called as hexagon. This polygon has 6 vertices.

**Share and Show**

**Write the number of sides and the number of vertices.**

Question 1.

triangle

__________ sides

__________ vertices

Answer:

A triangle has **3 sides** and** 3 vertices**.

Explanation:

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Question 2.

hexagon

__________ sides

__________ vertices

Answer:

A hexagon has 6 sides and 6 vertices.

Explanation:

In geometry, a hexagon is a six-sided polygon or 6-gon.

Question 3.

pentagon

__________ sides

__________ vertices

Answer:

A pentagon has 5 sides and 5 vertices.

Explanation:

In geometry, a pentagon is any five-sided polygon or 5-gon.

**Problem Solving**

**Write the number of sides and the number of vertices. Then write the name of the shape.**

Question 4.

__________ sides

__________ vertices

Answer:

The name of the above shape is **Hexagon**.

Explanation:

In the above image we can observe one polygon. The polygon has 6 sides and 6 vertices. The name of the above shape is Hexagon. In geometry, a hexagon is a six-sided polygon or 6-gon.

Question 5.

__________ sides

__________ vertices

Answer:

The name of the above shape is **quadrilateral**.

Explanation:

In the above image we can observe one polygon. A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

Question 6.

__________ sides

__________ vertices

Answer:

The name of the above shape is **quadrilateral**.

Explanation:

In the above image we can observe one polygon. A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

Question 7.

__________ sides

__________ vertices

Answer:

The name of the above shape is **triangle**.

Explanation:

In the above image we can observe one polygon. A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Question 8.

__________ sides

__________ vertices

Answer:

The name of the above shape is **pentagon**.

Explanation:

In the above image we can observe one polygon. A polygon has 5 sides and 5 vertices. The name of the above shape is pentagon.

Question 9.

__________ sides

__________ vertices

Answer:

The name of the above shape is **quadrilateral**.

Explanation:

In the above image we can observe one polygon. A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

Question 10.

**H.O.T. Multi-Step** Alex draws a hexagon and two pentagons. How many sides does Alex draw altogether?

________ sides

Answer:

6 sides + 5 sides + 5 sides = 16 sides

Alex drawn 16 sides altogether.

Explanation:

Alex drawn a hexagon and two pentagons. A hexagon has 6 sides and 6 vertices. A pentagon has 5 sides and 5 vertices. Add 6 sides with 5 sides and 5 sides the sum is 16 sides. So, Alex drawn 16 sides altogether.

Question 11.

**H.O.T.** Lydia draws a shape that has 4 vertices. It is not a square. It is not a rectangle. Draw a shape that could be Lydia’s shape.

Answer:

Lydia’s shape is quadrilateral.

Explanation:

Lydia drawn a shape that has 4 vertices. It is not a square. It is not a rectangle. Lydia’s shape of the polygon is quadrilateral.

**Daily Assessment Task**

**Choose the correct answer.**

Question 12.

Apply Erin sees this shape. What ¡s the shape?

(A) pentagon

(B) triangle

(C) quadrilateral

Answer:

The shape is quadrilateral.

So, option C is correct.

Explanation:

Erin saw the above shape. The shape of the above polygon is quadrilateral. A quadrilateral is a polygon with four edges (sides) and four vertices (corners). So, draw a circle for option C.

Question 13.

How many sides does this shape have?

_________ sides

Answer:

The above shape have **5** sides.

Explanation:

In the above image we can observe one polygon. The name of the above polygon is pentagon. A pentagon has 5 sides and 5 vertices.

Question 14.

How many vertices does this shape have?

_________ vertices

Answer:

The above shape has **6** vertices.

Explanation:

In the above image we can observe one polygon. The name of the above polygon is hexagon. A hexagon has 6 sides and 6 vertices.

Question 15.

**Texas Test Prep** What is the shape of this sign?

(A) quadrilateral

(B) hexagon

(C) pentagon

Answer:

Option C is correct.

Explanation:

The shape of the above sign is pentagon. Pentagon has 5 sides and 5 vertices. So, draw a circle for option C.

**Take Home Activity:** Ask your child to draw a shape that is a quadrilateral.

Answer:

Explanation:

A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

### Texas Go Math Grade 2 Lesson 14.1 Homework and Practice Answer Key

**Write the number of sides and the number of vertices.**

Question 1.

triangle

__________ sides

__________ vertices

Answer:

A triangle has 3 sides and 3 vertices.

Explanation:

A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.

Question 2.

quadrilateral

__________ sides

__________ vertices

Answer:

A quadrilateral has 4 sides and 4 vertices.

Explanation:

In the above image we can observe one polygon. A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

Question 3

pentagon

__________ sides

__________ vertices

Answer:

A pentagon has 5 sides and 5 vertices.

Explanation:

In the above image we can observe one polygon. A pentagon has 5 sides and 5 vertices.

**Write the number of sides and the number of vertices. Then write the name of the shape.**

Question 4.

__________ sides

__________ vertices

Answer:

The name of the above shape is **quadrilateral**.

Explanation:

In the above image we can observe one polygon. The name of the above shape is quadrilateral. A quadrilateral is a polygon with four edges (sides) and four vertices (corners).

Question 5.

__________ sides

__________ vertices

Answer:

The above shape is **hexagon**.

Explanation:

In the above image we can observe one polygon. The name of the above polygon is hexagon. A hexagon has 6 sides and 6 vertices.

Question 6.

__________ sides

__________ vertices

Answer:

The above shape is** pentagon**.

Explanation:

In the above image we can observe one polygon. The name of the above polygon is pentagon. A pentagon has 5 sides and 5 vertices.

**Problem Solving**

Question 7.

**Multi-Step** Brittany draws a pentagon and two triangles. How many sides does Brittany draw altogether?

_________ sides

Answer:

5 sides + 3 sides + 3 sides = 11 sides

Brittany drawn 11 sides altogether.

Explanation:

Brittany drawn a pentagon and two triangles. A pentagon has 5 sides and 5 vertices. A triangle has 3 sides and 3 vertices. Add 5 sides with 3 sides and 3 sides the sum is 11 sides. Brittany drawn 11 sides altogether.

**Lesson Check**

**Choose the correct answer.**

Question 8.

What is the shape of this plate?

(A) pentagon

(B) quadrilateral

(C) hexagon

Answer:

Option C is correct.

Explanation:

The shape of the above plate is hexagon. Hexagon has 6 sides and 6 vertices. So, draw a circle for option C.

Question 9.

Ben’s favorite shape has 5 sides and 5 vertices. What is Ben’s favorite shape?

(A) triangle

(B) pentagon

(C) hexagon

Answer:

Option B is correct.

Explanation:

Ben’s favorite shape has 5 sides and 5 vertices. So, Ben’s favorite shape is pentagon. Draw a circle for option B.

Question 10.

Lynn drew this shape. What is the name this shape?

(A) quadrilateral

(B) triangle

(C) pentagon

Answer:

option A is correct.

Explanation:

Lynn drawn the above shape. The name of the above shape is quadrilateral. A quadrilateral has 4 sides and 4 vertices. So, draw a circle for option A.

Question 11.

Matthew sees this shape. What is the shape?

(A) hexagon

(B) triangle

(C) quadrilateral

Answer:

Option B is correct.

Explanation:

Matthew saw the above shape. The name of the above shape is triangle. A triangle has 3 sides and 3 vertices. So, draw a circle for option B.