Illustrative Mathematics - Geometry - Unit 3 - Lesson 4

Angle ABC is taken by a dilation with center P and scale factor 3 to angle A'B'C'. The measure of angle ABC is 21o. What is the measure of angle A'B'C'?

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G.SRT.1.b

G.SRT.1.a

G.CO.9

G.CO.2

G.SRT.2

G.SRT.3

Select all lines that could be the image of line m by a dilation.

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• {"blocks":[{"key":"8p213","text":"n","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":1,"style":"BOLD"},{"offset":0,"length":1,"style":"ITALIC"}],"entityRanges":[],"data":{}}],"entityMap":{}}
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• {"blocks":[{"key":"cn5nv","text":"p","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":1,"style":"BOLD"}],"entityRanges":[],"data":{}}],"entityMap":{}}

Tags

G.SRT.1.b

G.SRT.1.a

G.CO.9

G.CO.2

G.SRT.2

G.SRT.3

Quadrilateral A'B'C'E' is the image of quadrilateral ABCE after a dilation centered at F. What is the scale factor of this dilation?

Tags

G.SRT.1.b

G.SRT.1.a

G.CO.9

G.CO.2

G.SRT.2

G.SRT.3

Solve the equation.\frac{4}{7}=\frac{10}{x}

Tags

G.SRT.1.b

G.SRT.1.a

G.CO.9

G.CO.2

G.SRT.2

G.SRT.3

Here are some measurements for triangle ABC and triangle XYZ:Angle CAB and angle ZXY are both 30 degreesAC and XZ both measure 3 unitsCB and ZY both measure 2 unitsAndre thinks thinks these triangles must be congruent. Clare says she knows they might not be congruent. Construct 2 triangles with the given measurements that aren't congruent. Explain why triangles with 3 congruent parts aren't necessarily congruent.

Tags

G.SRT.1.b

G.SRT.1.a

G.CO.9

G.CO.2

G.SRT.2

G.SRT.3