1. Word cloud
120 seconds
What is the name of the study of shapes and angles?
2. Slide
60 seconds
Geometry is the study of shapes, angles, and lines. Geometry helps us understand the world around us. We use geometry to measure and build things.
Geometry Basics
3. Slide
60 seconds
Lines: A line is a straight path that goes on forever in both directions and has no thickness. Angles: An angle is formed when two rays or line segments begin at the same point and extend in different directions. Triangles: A triangle is a three-sided polygon with three straight sides that are joined together.
Concepts:
4. Slide
60 seconds
A triangle can have more than three angles. A triangle with four or more angles is called an 'exterior angle'. The angles of an equilateral triangle are all 60°. The angle sum of a convex pentagon is 540°.
Did you know?
5. Open question
300 seconds
What shapes can you think of that have four sides?
6. Open question
300 seconds
How might you be able to tell if two shapes are the same?
7. Open question
300 seconds
What have you learned about shapes with four sides?
8. Open question
300 seconds
What strategies can you use to figure out how many sides a shape has?
9. Drawings
450 seconds
Brain break: Draw a balloon holding a flower.
10. Poll
60 seconds
What is a shape with three sides called?
- Rectangle
- Circle
- Square
- Triangle
11. Poll
60 seconds
What kind of angle is less than 90 degrees?
- Right angle
- Obtuse angle
- Acute angle
12. Poll
60 seconds
Which shape has six equal sides and six equal angles?
- Heptagon
- Pentagon
- Hexagon
- Octagon
13. Poll
60 seconds
What do you call the distance around a circle?
- Circumference
- Length
- Perimeter
- Area
14. Poll
60 seconds
What do you call the longest side of a right triangle?
- Opposite Side
- Hypotenuse
- Adjacent Side
- None of these
15. Open question
180 seconds
Work together in pairs: What shape has four sides and four angles?
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