• Properties of rectangles and square
• Finding unknown angles
What will we learn today?
Geometry Rectangles and Squares
We can find angles in rectangle and square.
Let’s look at some examples.
Angles in a Rectangle
We can find 4 right angles in a rectangle.
Angles in a Square
We can find 4 right angles in a square.
Try this out! How many angles can you see?
Try this out! How many angles can you see?
There are 4 angles.
Try this out! How many angles are greater than 90°?
Try this out! How many angles are greater than 90°?
Try this out! How many angles are smaller than 90°?
Try this out! How many angles are smaller than 90°?
How many right angles can you see?
How many right angles can you see?
Angles in a Square
If ∠z = 30°, what is ∠y?
z
y
Angles in a Square
A right angle = 90°.
To find ∠y, we must make use of ∠z.
Since ∠z = 30°,
∠y = 90°- 30° = 60° z
y
Are you ready to try out the questions?
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