Answer:
2
Step-by-step explanation:
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8. ab = cd
.. 3x+4 = 4x-1
.. 5 = x
.. ab = 3*5 +4
.. ab = 19
11. Adjacent vertex angles are supplementary and opposite angles are equal. If the angles are vertex angles numbered in order around the figure,
.. ∠2 = 12°
.. ∠3 = 168°
13. If the quadrilateral is a parallelogram so that point E is the midpoint of both diagonals, it will be a rectangle when the diagonals are equal length.
.. ae = be
.. x +22 = 3x -18
.. 40 = 2x
.. x = 20 . . . . . will make segments AE and BE the same length
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In general, diagrams are helpful for geometry problems.
Answer:
A triangle similar to DEF will have an angle that measures 45 degrees, an angle that measures 65 degrees, and an angle that measures 70 degrees
Step-by-step explanation:
Given
See attachment for complete question
Required
Angles of a triangle similar to
First, calculate the angle at D
---- angle on a straight line
Collect like terms
Next, calculate the angle at F
---- angle on a straight line
Collect like terms
Lastly, the angle at E
--- angles in a triangle
Make E the subject
<em>A triangle similar to </em><em> will have 45, 70 and 65 degrees as its angles</em>
Answer:
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