Year 5
Reading angles on a protractor Part 3
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Lesson details
Key learning points
- In this lesson, we will learn how to use a protractor to calculate and measure a reflex angle and an angle in a shape.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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4 Questions
Q1.
What error has the user made?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707208754%2Fkfswxvph05gl1mhecvjh.png&w=750&q=75)
Baseline not aligned
Cross hairs not aligned
None - the angle is correct, 20°
Q2.
How big is angle C?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707208759%2Ftpoar7fsfyd99lrvpafv.png&w=750&q=75)
100°
140°
60°
Q3.
How big is angle B?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707208766%2Fy1hfrduonegwpdphwf3s.png&w=750&q=75)
100°
140°
40°
Q4.
What is the approximate size of an internal angle of this regular pentagon?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707208771%2Fkc8anuvbuedomnwatmsb.png&w=750&q=75)
112°
38°
72°
it's impossible to tell
4 Questions
Q1.
What is the size of this reflex angle?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707160610%2Fkddgxkm2hdtbkmrvo9ld.png&w=750&q=75)
140°
40°
Q2.
Which angle is this protractor measuring?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707172657%2Fviihuhtvasbol47h21aq.png&w=640&q=75)
a
c
d
e
Q3.
How many degrees is this angle?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707172663%2Fu3doajmteicwovobzaxy.png&w=640&q=75)
0°
150°
30°
Q4.
How many degrees is this angle?
![An image in a quiz](/_next/image?url=https%3A%2F%2Foaknationalacademy-res.cloudinary.com%2Fimage%2Fupload%2Fv1707172674%2Fi8ytp0gwf70w0gdonofy.png&w=828&q=75)
120°
140°
40°
60°