# Chapter 3 Unit Flashcards Preview

## Official Grade 7 Math > Chapter 3 Unit > Flashcards

Flashcards in Chapter 3 Unit Deck (17)
1
Q

Perpendicular means

A

to intersect

2
Q

Perpendicular bisector is…

A

to cut through the middle of a line segment at 90 degrees

3
Q

tools to find a perpendicular bisector

A

ruler and protractor, compass, triangle

4
Q

an angle that is smaller than 90 degrees

A

acute angle

5
Q

obtuse angle

A

an angle bigger than 90 degrees

6
Q

word for “split in half”

A

bisector

7
Q

Angle Bisector

A

a line (bisector) that cuts an angle into 2 equal pieces

8
Q

What is half of 90 degrees?

A

45 degrees

9
Q

For angle ABC, which letter is the angle/corner?

A

B

10
Q

For angle XYZ which letter is the anlge?

A

Y

11
Q

a four sided shape with opposite sides are parallel and equal in length

A

parallelogram

12
Q

the formula for area of a parallelogram

A

base x height = area

13
Q

units are always in what format?

A

cm

14
Q

The area of a parallelogram that has a base of 2 and height of 6 is…

A

12cm²

15
Q

The formula to get the area of a triangle is

A

(b x h) / 2

16
Q

A triangle with a base of 3 and height of 4 has an area of…

A

6cm²

17
Q

A triangle with a base of 12 and a height of 3 has an area of

A

18cm²