Showing posts with label similar triangles. Show all posts
Showing posts with label similar triangles. Show all posts
Wednesday, May 14, 2025

Similar Triangles: Team question : Beginning level

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9. In the figure below, quadrilateral CDEG is a square with CD = 3, and quadrilateral BEFH is a rectangle. If EB = 5, how many units is BH? ...
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Wednesday, March 23, 2022

Dimensional Change

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There are lots of questions on dimensional change and this is a very common one. Make sure you understand the relationship among...
Wednesday, October 10, 2018

Geometric mean of a right triangle

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Geometric mean of a right triangle : Video tutorial  Notes Practice I  Practice II : focus on the height (or altitude) Practice II...
Sunday, January 1, 2017

2013 Mathcounts Natinals Sprint # 28

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2013 Mathcounts National Sprint #28 : In right triangle ABC, shown here,  line AC = 5 units and line BC = 12 units. Points D and E lie on  ...
Thursday, December 17, 2015

Dimentional Change Questions III: Similar Shapes

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There are numerous similar triangle questions on Mathcounts. Here are the basics: If two triangles are similar, their correspond...
Tuesday, November 10, 2015

Mathcounts : Geometry -- Medians ; Squares in Isosceles Right Triangle, Similar Triangles, Triangles share the same vertex

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Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...
Tuesday, October 13, 2015

2015 Mathcounts State Prep : Inscribed Cricle Radius and Similar Triangles

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Question : \(\Delta\) ABC is an equilateral triangle. Circle "O" is the inscribed circle and it's radius is 15.  What ...
Tuesday, September 23, 2014

Similar triangles, Trapezoids and Triangles that Share the Same Vertices

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Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...
Monday, March 17, 2014

This Week's Work : Week 43 - for Inquisitive Young Mathletes

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From Mathcounts Mini : Using Similarity to Solve Geometry Problems Also try the warm-up, retry the problems in the video on your own and s...
Thursday, January 23, 2014

Three Pole Problems : Similar triangles

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Question: If you know the length of x and y, and the whole length of \(\overline {AB}\) , A: what is the ratio of a to b and  B: ...
Monday, November 4, 2013

Find the area of the petal, or the football shape.

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Find the area of the football shape, or the petal shape. The below Mathcounts mini presents two methods. Circle and area revisited from M...
Tuesday, April 23, 2013

This Week's Work : Week 9 -- for Inquisitive Young Mathletes

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Part 1: See below for links: They are all related to dimensional change and similar polygons. Dimensional change questions I  Dimensio...
Friday, December 21, 2012

2013 Mathcounts State Prep: Similar Triangles and Height to the Hypotenuse

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There are many concepts you can learn from this image, which cover numerous similar right triangles, ratio/proportion/dimensional chan...
Sunday, November 25, 2012

Trianges That Share the Same Vertex/Similar Triangles

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Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...
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Thursday, November 22, 2012

Similar Triangles I

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Check out Mathcounts here, the best competition math program for middle school students. Download this year's Mathcounts handbook her...
1 comment: