Name_______________________________ Period______ Date



Name_______________________________ Period______ Date____________________

Special Triangles and Quadrilaterals

1) An ___________________________ is a triangle that has two sides that are the same length. The opposite angles are always the same measure in degrees also.

Like all triangles, the angles will all add up to _______.

2) 3) 4)

[pic] 15 ft [pic] _ ft

[pic] 3 cm

[pic] ____[pic]

1.5 in ft 5 cm ____[pic]

19 ft

3 cm

[pic] [pic]

0.75 in [pic]

5) A ____________________________ is a triangle that has a [pic] in it.

Like all triangles, the angles will all add up to _______.

6) 7) 8)

[pic]

____[pic]

[pic]

____[pic]

____[pic]

[pic]

9) An _______________________________________ is a triangle that has a [pic] in it, two of its sides are the same length, and two of its angles are congruent.

Like all triangles, the angles will all add up to _______.

10) 11) 12 yds 12)

[pic] ____[pic]

6 in

3 ft 3.5 ft yds ____[pic] ____[pic]

15 yds

____[pic] ft 4.2 ft ____[pic]

ft

13) A _______________________ is a quadrilateral (has ___ sides) that has two sides that are parallel. Like all convex quadrilaterals, the angles will all add up to _______.

14) A ________________________ is a quadrilateral (has ___ sides) that has two pairs of parallel sides. Like all convex quadrilaterals, the angles will all add up to _______.

15) An __________________________ is a trapezoid that has two pairs of adjacent angles that are congruent. Like all convex quadrilaterals, the angles will all add up to _______.

16) A ____________________ is a quadrilateral that has all angles equal to [pic]. Like all convex quadrilaterals, the angles will all add up to _______.

17) A ____________________ is a rectangle where all the sides are the same length. Like all convex quadrilaterals, the angles will all add up to _______.

18) A ____________________ is a parallelogram where all the sides are the same length. Like all quadrilaterals, the angles will all add up to _______.

19) A ___________________ is a quadrilateral that has two pairs of adjacent sides that are congruent.

___[pic]

[pic]

[pic] ____[pic]

[pic] [pic]

[pic] ____[pic]

[pic] ____[pic]

25 ft

3 ft

2 mm

13 in

2 in 1 in

3 in

3 in

Name __ANSWER KEY_______________ Period______ Date____________________

Special Triangles and Quadrilaterals

1) An _isosceles triangle__ ______ is a triangle that has two sides that are the same length. The opposite angles are always the same measure in degrees also.

Like all triangles, the angles will all add up to 180 degrees.

2) 3) 4)

[pic] 15 ft [pic] 15 ft

[pic] 3 cm

[pic] __25[pic]

1.5 in 1.5 ft 5 cm _120[pic]

19 ft

3 cm

[pic] [pic]

0.75 in [pic]

5) A _right triangle__ ______ is a triangle that has a [pic] in it.

Like all triangles, the angles will all add up to 180 degrees.

6) 7) 8)

[pic]

13 [pic]

[pic]

_37[pic]

_30_[pic]

[pic]

9) An __isosceles right triangle____________________ is a triangle that has a [pic] in it, two of its sides are the same length, and two of its angles are congruent.

Like all triangles, the angles will all add up to 180 degrees.

10) 11) 12 yds 12)

[pic] _45_[pic]

6 in

3 ft 3.5 ft 12 yds _45_[pic] 45_[pic]

15 yds

_45_[pic] 4.2 ft 4.2 ft _45_[pic]

3 ft

13) A ___trapezoid___________ is a quadrilateral (has _4_ sides) that has two sides that are parallel. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

14) A __parallelogram_______________ is a quadrilateral (has _4_ sides) that has two pairs of parallel sides. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

15) An __isosceles trapezoid________ is a trapezoid that has two pairs of adjacent angles that are congruent. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

16) A ___rectangle____________ is a quadrilateral that has all angles equal to [pic]. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

17) A __square_______________ is a rectangle where all the sides are the same length. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

18) A __rhombus_____________ is a parallelogram where all the sides are the same length. Like all convex quadrilaterals, the angles will all add up to _360 degrees_.

19) A ____kite___________ is a quadrilateral that has two pairs of adjacent sides that are congruent.

_105_[pic]

[pic]

[pic] _65_[pic]

[pic] [pic]

[pic] _53_[pic]

[pic] _127_[pic]

25 ft

3 ft

2 mm

13 in

2 in 1 in

3 in

3 in

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