# demo lesson

What kind of angle is this?
A
obtuse
B
straight
C
right
D
acute
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Slide 1: Quiz in interactive video

This lesson contains 18 slides, with interactive quizzes and text slide.

Lesson duration is: 30 min

## Items in this lesson

What kind of angle is this?
A
obtuse
B
straight
C
right
D
acute

#### Slide 1 -Quiz

Prior Knowledge Check
What are lines that extend forever, and never cross, called?

#### Slide 2 -Mind map

An Introduction to Angles

#### Slide 3 -Slide

What do you know about angles?

#### Slide 4 -Mind map

What kind of angle is this?
A
acute
B
obtuse
C
straight
D
right

#### Slide 5 -Quiz

What kind of angle is this?
A
obtuse
B
straight
C
right
D
acute

#### Slide 6 -Quiz

What kind of angle is this?
A
acute
B
obtuse
C
right
D
straight

#### Slide 7 -Quiz

Prior Knowledge Check
What are lines that extend forever, and never cross, called?

#### Slide 8 -Mind map

Lines that point in the same direction and never touch are called...
A
perpendicular
B
right
C
straight
D
parallel

#### Slide 9 -Quiz

What kind of angle is this?
A
acute
B
obtuse
C
right
D
straight

#### Slide 10 -Quiz

Lines that point in the same direction and never touch are called...
A
perpendicular
B
right
C
straight
D
parallel

#### Slide 11 -Quiz

Prior Knowledge Check
What are lines that extend forever, and never cross, called?

#### Slide 12 -Mind map

What kind of angle is this?
A
acute
B
obtuse
C
straight
D
right

#### Slide 13 -Quiz

What kind of angle is this?
A
obtuse
B
straight
C
right
D
acute

#### Slide 14 -Quiz

Match each of the angle names to their corresponding figure.
Supplementary Angles
Complementary Angles
Vertical Angles

#### Slide 15 -Drag question

What angle measures larger than 90 degrees?
Obtuse
Acute
Right
Straight

#### Slide 16 -Poll

What kind of lines are these?
A
parallel
B
right
C
vertical
D
Perpendicular

#### Slide 17 -Quiz

Give a real life example of either a right, acute, or obtuse angle(s).