Geometry chapter 3 quiz #1

What types of figures have a ratio of similarity of 1:1? Explain

Angles & side lengths have to be exactly the same

T or F? 7 miles in 10 minutes = 3.5 miles in 5 minutes?

True

T or F? All equilateral triangles are similar?

True

T or F? If cross products are equal, the ratios are equal?

True

T or F? If two shapes are congruent, then their ratio of similarity is 1:1?

True

T or F? 4/5 = 14/16

False (cross multiply)

T or F? All squares are similar?

True (top & bottom ratio always the same)

T or F? 3:5 and 12:20 are equal ratios?

True (x4)

T or F? If x/15 = 12/36, then x=3?

False (cross multiply)

T or F? A square can be similar to a triangle since a square is composed of two triangles?

False (different shapes can't be similar)

T or F? 6 for $0.85 is better than 8 for $1.00?

False (divide)

T or F? All rectangles are similar?

False (doesn't have equal ratio, but has same measurements)

Explain what makes two/more figures similar

Corresponding angles have to be equal with the same measure. Side lengths, angles & ratio.

T or F? 3/5=6/10, so 3 x 6 = 5 x 10?

False

T or F? All isosceles triangles are similar?

False

T or F? If two triangles are similar, their sides are the same length?

False