How do you read a protractor worksheet?

One of the arms of each angle traces either the left or right zero of the protractor. Use the inner or outer scales of the protractor, and precisely measure the angles depicted here. Read the inner scale if the angle opens to the right, and read the outer scale if it opens to the left.

Do you read the top or bottom numbers on a protractor?

Cuong and Cheryl wrote: One rule you must always remember is you must always have the bulls eye on the straight line on the bottom. If the angle goes to the right you must read the bottom numbers. But if it goes to the left you must read the top numbers.

How do you use a protractor to measure angles worksheet?

Place the midpoint of the protractor on the vertex, line up one arm with the base line of the protractor, measure the angles with 1-degree increments using the inner scale in these pdfs on measuring angles. Angles that measure more than 180°, but less than 360° are reflex angles.

Do you read the inside or outside of a protractor?

Read the degree marking where the ruler crosses the curved edge of the protractor. You'll notice two sets of degrees along the edge: an inner and outer scale. Both scales go from 0 to 180, but they run in opposite directions. If the angle opens to the right side of the protractor, use the inner scale.

What are the outer numbers on a protractor for?

The half-circle protractor is commonly used to measure angles (Figure 9). The inner number scale rises from 0 to 180, from right to left, and the outer scale goes from 0 to 180, left to right.

How To Read a Protractor

What does each line on a protractor stand for?

The symbol for degrees is "°". There are 360° in a full circle, and 90° in a right angle. A protractor is used for measuring angles. As shown below, a protractor is a half or full circle measuring device, marked in degrees along the outer edge, with a straight line running from 0° to 180°.

How do you measure angles?

Place the midpoint of the protractor on the vertex of the angle. Line up one side of the angle with the zero line of the protractor. Read the degrees where the other side crosses the number scale.

How do you find angle activity?

How do you use a protractor to measure angles in a triangle?

You can also measure the angles with a protractor and compare. Align the horizontal edge of the protractor with the base of the triangle. Place the center point of the protractor on the vertex of the angle. Follow the side of the triangle until it reaches the angle measurement mark.

What are the bottom numbers on a protractor?

There are two sets of degrees going in opposite directions along an arc. The top of the arc shows degrees from 0º to 180º from left to right. The bottom of the arc shows degrees from 180º to 0º from left to right. The smallest "tick marks" along the edge of the protractor represent 1º intervals.

How do you teach students to use a protractor?

Find the baseline of the protractor and line it up with the baseline of the shape or angle. Place the midpoint of the protractor on the vertex of the angle. Line up one side of the angle with the zero line of the protractor (where you see the number 0) Read the degrees where the other side crosses the number scale.

How do you teach students about angles?

Tape random straight lines across students' tables to create lots of angles where the tape overlaps. Then ask your students to sit around the table with a marker, and encourage them to classify as many angles as they could. After classifying angles, your pupils can then move on to measuring them.

How do you draw a protractor step by step?

What are the parts of a protractor?

What is a protractor in math kids?

A protractor is a clear plastic device to measure angles from 0 degrees to 90 degrees. We can use a protractor to measure an angle in degrees.

What angle is 45 degree?

A 45-degree angle is an acute angle. It is half of the right angle or a 90-degree angle.

What are the 5 types of angle?

In geometry, there are various types of angles, based on measurement. The names of basic angles are Acute angle, Obtuse angle, Right angle, Straight angle, reflex angle and full rotation.