[fullwidth background_color=”” background_image=”” background_parallax=”none” enable_mobile=”no” parallax_speed=”0.3″ background_repeat=”no-repeat” background_position=”left top” video_url=”” video_aspect_ratio=”16:9″ video_webm=”” video_mp4=”” video_ogv=”” video_preview_image=”” overlay_color=”” overlay_opacity=”0.5″ video_mute=”yes” video_loop=”yes” fade=”no” border_size=”0px” border_color=”” border_style=”” padding_top=”20″ padding_bottom=”20″ padding_left=”0″ padding_right=”0″ hundred_percent=”no” equal_height_columns=”no” hide_on_mobile=”no” menu_anchor=”” class=”” id=””][fusion_text]
Establish the sine, cosine and area rules for any triangle and solve related problems (VCMMG367)
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LO: To utilise Heron’s Formula to find the area of non-right angled triangles.
Know:
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how to multiply the 3 sides of a triangle.
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how to square root a number using digital technologies.
Understand:
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That Heron’s formula can be utilised to find the area of non-right angled triangles.
Do:
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I can utilise Heron’s Formula to find the area of non-right angled triangles.
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Heron’s Formula
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Finding the area of a right-angled triangle is pretty simple. You just need to multiply the base of the triangle by the height and divide the answer by two.
However, with a non-right angled triangle, this is a little bit trickier.
The first step is to find out the value of “S“.
S is basically the perimeter of the triangle divided by two.
Once you know the “S” value, you just have to just apply Heron’s Formula which is the square root of S multiplied by S minus side “A”, S minus side “B” and S minus side “C”.
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Interactives
[/title][one_half last=”no” spacing=”yes” center_content=”no” hide_on_mobile=”no” background_color=”” background_image=”” background_repeat=”no-repeat” background_position=”left top” border_position=”all” border_size=”0px” border_color=”” border_style=”” padding=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”” animation_speed=”0.1″ class=”” id=””][imageframe lightbox=”no” lightbox_image=”” style_type=”none” hover_type=”none” bordercolor=”” bordersize=”0px” borderradius=”0″ stylecolor=”” align=”none” link=”https://www.mathopenref.com/heronsformula.html” linktarget=”_self” animation_type=”0″ animation_direction=”down” animation_speed=”0.1″ hide_on_mobile=”no” class=”” id=””] [/imageframe][/one_half][one_half last=”yes” spacing=”yes” center_content=”no” hide_on_mobile=”no” background_color=”” background_image=”” background_repeat=”no-repeat” background_position=”left top” border_position=”all” border_size=”0px” border_color=”” border_style=”” padding=”” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”” animation_speed=”0.1″ class=”” id=””][imageframe lightbox=”no” lightbox_image=”” style_type=”none” hover_type=”none” bordercolor=”” bordersize=”0px” borderradius=”0″ stylecolor=”” align=”none” link=”https://www.mathwarehouse.com/geometry/triangles/area/area-of-triangle-applet.php?mode=herons” linktarget=”_self” animation_type=”0″ animation_direction=”down” animation_speed=”0.1″ hide_on_mobile=”no” class=”” id=””]
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Heron’s Formula Videos
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