Chapter 3 Unit Flashcards Preview

Official Grade 7 Math > Chapter 3 Unit > Flashcards

Flashcards in Chapter 3 Unit Deck (17):
1

Perpendicular means

to intersect

2

Perpendicular bisector is...

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

3

tools to find a perpendicular bisector

ruler and protractor, compass, triangle

4

an angle that is smaller than 90 degrees

acute angle

5

obtuse angle

an angle bigger than 90 degrees

6

word for "split in half"

bisector

7

Angle Bisector

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

8

What is half of 90 degrees?

45 degrees

9

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

B

10

For angle XYZ which letter is the anlge?

Y

11

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

parallelogram

12

the formula for area of a parallelogram

base x height = area

13

units are always in what format?

cm

14

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

12cm²

15

The formula to get the area of a triangle is

(b x h) / 2

16

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

6cm²

17

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

18cm²