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Angles & triangles

English 21 Public

triangles and angles

Study Slideshow

How many sides does a triangle have?

3

5

A triangle with 3 acute angles is called...

acute triangle

20

A triangle with 1 obtuse angle is called...

obtuse triangle

20

A triangle with 1 right angle is called...

a right triangle

20

A angle that is exactly 90 degrees...

right angle

20

An angle that is greater than 90 degrees

obtuse

20

An angle that is smaller than 90 degrees

acute

20

What forms an angle?

2 rays

25

Which angle is this?

right

25

An angle that is exactly 180 degrees...

straight

25

A straight angle is also called...

a line

25

Which angle is this?

acute angle

25

Which angle is this?

obtuse angle

25

Which angle is this?

acute

25

Which angle is this?

straight

25

Which triangle is this?

acute triangle

25

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