All the solutions provided in **McGraw Hill My Math Grade 4 Answer Key PDF Chapter 14 Check My Progress **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 4 Chapter 14 Check My Progress Answer Key

**Check My Progress Page No. 885-886**

**Vocabulary check**

Use the word bank to complete each sentence.

endpoint

line

line segment

point

ray

Question 1.

A ________________ is part of a line between two endpoints.

Answer: line segment

A line segment is part of a line between two endpoints.

Question 2.

A ______________ is a part of a line that has one _______________ and extends in one direction without ending.

Answer: ray, endpoint

A ray is a part of a line that has one endpoint and extends in one direction without ending.

Question 3.

A ______________ is a straight set of points that extends in opposite directions without ending.

Answer: line

A line is a straight set of points that extends in opposite directions without ending.

Question 4.

A ________________ is an exact location that is represented by a dot.

Answer: point

A point is an exact location that is represented by a dot.

**Match each vocabulary word to its definition.**

Answer:

Intersecting – Lines that meet or cross each other, but do not necessarily form square corners.

Parallel – Lines that are always the same distance apart and do not meet.

Perpendicular – Lines that meet or cross each other to form square corners.

**Concept Check**

**Circle the correct description of each figure.**

Question 8.

line

line segment

ray

Answer: Line segment

A line segment has two endpoints at each corner.

Question 9.

line

line segment

ray

Answer: Ray

A ray is a part of a line that has one endpoint and extends in one direction infinitely.

Question 10.

line

line segment

ray

Answer: Line

A line is a straight set of points that extends in opposite directions infinitely.

**Problem Solving**

Question 11.

Identify the lines outlined on the pair of scissors as parallel, perpendicular, or intersecting. Choose the most specific term.

Answer: Intersecting lines

the lines outlined on the pair of scissors are intersecting lines.

Question 12.

Sandy is driving on Broadway Avenue. Which street appears to be perpendicular to Broadway Avenue?

Answer: Audience Road

Audience Road is 90 degrees to the Broadway Avenue. So, Audience Road appears to be perpendicular to Broadway Avenue as per the above figure.

Question 13.

Nathan practiced his handwriting by writing the alphabet in capital letters. He stopped at the first letter that contains parallel line segments. At which letter did Nathan stop writing?

Answer: E

Nathan stopped writing at letter ‘E’. As you can observe, there are 3 parallel lines in capital alphabet E.

**Test Practice**

Question 14.

Which figure shows parallel lines?

Answer: A

parallel lines can be defined as two lines that are at equal distance from each other and never meet.

**Check My Progress Page No. 917-918**

**Vocabulary Check**

Unscramble each word to complete each sentence. Use a word from the word bank.

acute angle

angle

degree (°)

obtuse angle

right angle

Question 1.

thrig Ingae

A ______________ measures 90°.

Answer: right angle

The angle which measures 90 degrees is known as right angle.

Question 2.

leagn

An ______________ is a geometric shape that is formed when two rays have the same endpoint.

Answer: Angle

Angle is formed when two rays joined in such a way that they have the same endpoint.

Question 3.

tacue aleng

An _______________ measures greater than 0° and less than 90°.

Answer: acute angle

An angle that measures greater than 0° and less than 90° is called acute angle.

Question 4.

geeedr

The unit used to measure an angle is called a _______________.

Answer: degree

The unit used to measure an angle is called a degree.

Question 5.

oseutb egnla

An _______________ measures greater than 90° but less than 180°.

Answer: obtuse angle

An angle measures greater than 90° but less than 180° is called Obtuse angle.

**Concept Check**

**Classify each angle as right. acute, or obtuse.**

Question 6.

Answer: Acute angle

An angle that measures greater than 0° and less than 90° is called acute angle. As you can observe in the above figure, the angle given is less than 90°.

Question 7.

Answer: Right angle

The angle which measures 90 degrees is known as right angle. As you can observe in the above figure, the angle given is equal to 90°.

Question 8.

Answer: Obtuse angle

An angle measures greater than 90° but less than 180° is called Obtuse angle. As you can observe in the above figure, the angle given is greater than 90°.

**Problem Solving**

Question 9.

An angle on a grocery cart is made up of 100 one-degree angles. Find the measure of the angle.

Answer: 100 degrees

By definition, an angle that is made up of N one-degree angles has a measure of N degrees. Therefore, the measure of the angle is 100°.

Question 10.

The angle shown is made up of 112 one-degree angles. Find the measure of the angle.

Answer: 112 degrees

By definition, an angle that is made up of N one-degree angles has a measure of N degrees. Therefore, the measure of the angle is 112°.

Question 11.

Draw an angle that measures between 40° and 50°.

Answer:

The angle measured in the above figure will be between 40° and 50°.

**Test Practice**

Question 12.

What is the measure of the angle in degrees and as a fraction of a full turn?

(A) 90°; \(\frac{3}{4}\) turn

(B) 90°; \(\frac{1}{360}\) turn

(C) 90°; \(\frac{1}{4}\) turn

(D) 180°; \(\frac{1}{2}\) turn

Answer: C (90°; \(\frac{1}{4}\) turn)

The angle mentioned above is a right angle, which is 90 degrees.

Total angle = 360 degrees

So, if you divide 90 degrees by 360 degrees, we will get the fraction as \(\frac{1}{4}\)

\(\frac{90}{360}\) = \(\frac{1}{4}\) after simplification.