If you do not remember the specific measurements for right triangles like the video, how would you find the missing side of the right triangle?

Use the Pythagorean theorem: a² + b² = c².

Use the formula for the area of a triangle: A = 1/2 * base * height.

Add the lengths of the two shorter sides together.

Multiply the lengths of the two shorter sides.

What is the forma for the area of a trapezoid?

Area = (1/2) * (base1 + base2) * height

Area = (1/2) * (base1 - base2) * height

Area = (base1 + base2) * height

He needs to find the length of the bases of the two right triangles. How can he do that?

He knows the total length of the side of the trapezoid, and he knows that the middle section between the triangles is 12, so he can use arithmetic to find the 2 bases.

Use a ruler to estimate the bases.

Add the angles of the triangles.

He can use Pythagorean theorem to find the length of the missing sides of the triangles in this problems because he knows the other two sides of the triangles.

Lesson 111-114

Interactive Video

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Mathematics

•

8th Grade

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Practice Problem

•

Easy

•

CCSS

6.G.A.1, 8.G.A.2, HSG.SRT.A.2

Standards-aligned

Cassi Riggs

Used 7+ times

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40 questions

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SLIDE QUESTION

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SLIDE QUESTION

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SLIDE QUESTION

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MULTIPLE CHOICE QUESTION

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CCSS.HSG.SRT.A.2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

10 inches

16 inches

8 inches

2 inches

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CCSS.HSG.SRT.A.2

MULTIPLE CHOICE QUESTION

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CCSS.8.G.A.2

CCSS.HSG.CO.B.6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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CCSS.8.G.A.2

CCSS.HSG.CO.B.6

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Lesson 111-114

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Figures that are the exact same size and shape are called congruent figures.

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