10. Geometry

Similar Figures

10. Geometry

Similar Figures: Videos & Practice Problems

Video Lessons

Concept

Similar Triangles

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Example

Similar Triangles Example 1

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Problem

The following shapes are similar. Find $x$ .
$Two similar pentagons with side lengths labeled; find the missing side length x in the smaller pentagon.$

$5.14$

$7$

$63$

$5.67$

Problem

Use the similar triangles to find the following:
(A) $m ∠ R$
$Two similar triangles with side lengths and angles labeled, showing corresponding angles and measurements in centimeters.$

$85$\degree$$

$25$\degree$$

$95$\degree$$

$60$\degree$$

Problem

Use the similar triangles to find the following:
(B) The length of $\overline{P R}$
$Two similar triangles with labeled angles and side lengths, highlighting the length of segment PR to be found.$

$60.5$ cm

$96.8$ cm

$50$ cm

$80$ cm

Example

Similar Triangles Example 2

Video duration:

Your Liberal Arts Math tutors

Patrick Ford

Physics and Math Lead Instructor

Similar Figures: Videos & Practice Problems

Similar Triangles

Similar Triangles Example 1

The following shapes are similar. Find xx.

Use the similar triangles to find the following:(A) m∠Rm∠R

Use the similar triangles to find the following:(B) The length of PR‾\(\overline{PR}\)

Similar Triangles Example 2

Your Liberal Arts Math tutors

The following shapes are similar. Find $x$ .
$Two similar pentagons with side lengths labeled; find the missing side length x in the smaller pentagon.$

Use the similar triangles to find the following:
(A) $m ∠ R$
$Two similar triangles with side lengths and angles labeled, showing corresponding angles and measurements in centimeters.$

Use the similar triangles to find the following:
(B) The length of $\overline{P R}$
$Two similar triangles with labeled angles and side lengths, highlighting the length of segment PR to be found.$