Distance Formula to Find Area and Perimeter

Presentation

•

Mathematics

•

9th - 12th Grade

•

Hard

Joseph Anderson

FREE Resource

12 Slides • 14 Questions

Area & Perimeter in Coordinate geometry

by Teacher Afiqah

9 Science 1

SM Katok

Poll

LO: Solve problems about perimeter and area given the coordinates

I understand

I don't understand

Poll

Steps to success:

1. On a graph, plot the coordinates accurately.

2. Join the points using a straight line to form a shape.

3. Write the distance formula

4. Subsititute & calculate the distance between the 2 points.

5. Calculate perimeter & area of basic shapes

I get it

I don't get it.

Multiple Choice

BLUE

GREEN

YELLOW

RED

Multiple Choice

Calculate the distance of AB.

Correct your answers to 1 decimal place.

$d=\sqrt[]{(𝑥_2−𝑥_1)^2+(𝑦_2−𝑦_1)^2}$

7.2 units

7.1 units

7.0 units

Multiple Choice

BLUE

GREEN

YELLOW

RED

Multiple Select

What do you need to calculate the area of a triangle?

You may choose more than 1 answer.

perpendicular height

height

base

diagonal length

Multiple Choice

What is formula for the area of trapezium?

$\frac{1}{2}\times\left(a\times b\right)\times perpendicular\ height$

$\frac{1}{2}\times\left(a+b\right)\times height$

$\frac{1}{2}\times\left(a\times b\right)\times height$

$\frac{1}{2}\times\left(a+b\right)\times perpendicular\ height$

Fill in the Blanks

The area of the trapezium is

Type answer...

squared metre.

Read the instructions carefully

Prepare ruler, pencil, calculator.
Get ready with your graph paper.
If you don't have graph paper, then a lined paper is fine.

Open Ended

Using 1 cm = 1 unit

Draw x-axis with range -3 to 6

Draw y-axis with range -1 to 5

Plot the vertices of A(-2,0), B(5,0) and C(1,4)

Join the points using straight lines.

Describe the shape you drew?

Type response here

Fill in the Blanks

Based on your diagram, calculate the length of AB.

$d=\sqrt[]{(𝑥_2−𝑥_1)^2+(𝑦_2−𝑦_1)^2}$

include the units in your answer

Type answer...

Fill in the Blanks

Based on your diagram, calculate the length of AC. $d=\sqrt[]{(𝑥_2−𝑥_1)^2+(𝑦_2−𝑦_1)^2}$

include the units in your answer

Type answer...

Fill in the Blanks

Based on your diagram, calculate the length of BC. $d=\sqrt[]{(𝑥_2−𝑥_1)^2+(𝑦_2−𝑦_1)^2}$

include the units in your answer.

Correct your answer to 2 decimal place

Type answer...

Fill in the Blanks

Based on your diagram and calculated lengths, calculate the perimeter of ABC.

Correct your answer to 2 decimal place and include units.

Type answer...

Multiple Choice

The area of triangle ABC ______ squared units

14.5

15.5

Area & Perimeter in Coordinate geometry

by Teacher Afiqah

9 Science 1

SM Katok

Show answer

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