Download presentation

Presentation is loading. Please wait.

Published byVictor George Modified over 5 years ago

1
4.6 – AREA FORMULAS

2
Formulas from yesterday: Perim.of a Rect.= Area of a Rect.=

3
Formulas from yesterday: Perim.of a Square= Area of a Square=

4
Parallelogram: A figure with opposite sides that are PARALLEL and EQUAL in length. b h This is the HEIGHT Drawn to the BASE Formula for Area:

5
The HEIGHT is measured from one side of the parallelogram to the other at a 90 degree angle. The BASE is a side of the parallelogram that the height meets at a 90 degree angle.

6
Example: Find the perimeter and area of a parallelogram with sides inches by inches and a height of 6 inches drawn to the -inch side. PerimeterArea Formula: Equation: Solution:

7
TRIANGLES: Since a triangle is ONE HALF of a parallelogram the area of a triangle can be found by taking ONE HALF of the area of the parallelogram. This is the HEIGHT Drawn to the BASE Formula for Area: b h

8
The height of a triangle is measured from one of its vertices to the OPPOSITE side at a 90 degree angle. The base is the SIDE that the height intersects at a 90 degree angle.

9
Example: Find the perimeter and area of a triangle with sides of 10.2 cm, 3.56 cm, and 12.8c m. With a height of 2.8 cm and a base of 10.2 cm. PerimeterArea Formula: Equation: Solution:

10
TRAPEZOIDS: A trapezoid is a QUADRILATERAL with two opposites sides that are parallel. The parallel sides are called BASES. The height of a trapezoid is measured from one base to the other at a 90 DEGREE angle. Formula for Area: b1b1 h b2b2 s2s2 s1s1

11
Example: Given a trapezoid with the following dimensions find its perimeter and area: PerimeterArea Formula: Equation: Solution:

12
Homework : Section 4.6 pages 244-246 #’s 5-13, 18, 22, 26, 28, 32, 36, 38, 40-43

Similar presentations

© 2020 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google